drivers: net: Remove device_node checks with of_mdiobus_register()

A number of drivers have the following pattern:

if (np)
of_mdiobus_register()
else
mdiobus_register()

which the implementation of of_mdiobus_register() now takes care of.
Remove that pattern in drivers that strictly adhere to it.

Signed-off-by: Florian Fainelli <[e-mail]>
Reviewed-by: Grygorii Strashko <[e-mail]>
Reviewed-by: Fugang Duan <[e-mail]>
Reviewed-by: Antoine Tenart <[e-mail]>
Reviewed-by: Jose Abreu <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/dsa/bcm_sf2.c

···
 	priv->slave_mii_bus->parent = ds->dev->parent;
 	priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
 
-	if (dn)
-		err = of_mdiobus_register(priv->slave_mii_bus, dn);
-	else
-		err = mdiobus_register(priv->slave_mii_bus);
-
-	if (err)
+	err = of_mdiobus_register(priv->slave_mii_bus, dn);
+	if (err && dn)
 		of_node_put(dn);
 
 	return err;

drivers/net/dsa/mv88e6xxx/chip.c

···
 			return err;
 	}
 
-	if (np)
-		err = of_mdiobus_register(bus, np);
-	else
-		err = mdiobus_register(bus);
+	err = of_mdiobus_register(bus, np);
 	if (err) {
 		dev_err(chip->dev, "Cannot register MDIO bus (%d)\n", err);
 		mv88e6xxx_g2_irq_mdio_free(chip, bus);

drivers/net/ethernet/cadence/macb_main.c

···
 	dev_set_drvdata(&bp->dev->dev, bp->mii_bus);
 
 	np = bp->pdev->dev.of_node;
+	if (pdata)
+		bp->mii_bus->phy_mask = pdata->phy_mask;
 
-	if (np) {
-		err = of_mdiobus_register(bp->mii_bus, np);
-	} else {
-		if (pdata)
-			bp->mii_bus->phy_mask = pdata->phy_mask;
-
-		err = mdiobus_register(bp->mii_bus);
-	}
-
+	err = of_mdiobus_register(bp->mii_bus, np);
 	if (err)
 		goto err_out_free_mdiobus;
 

drivers/net/ethernet/freescale/fec_main.c

···
 	fep->mii_bus->parent = &pdev->dev;
 
 	node = of_get_child_by_name(pdev->dev.of_node, "mdio");
-	if (node) {
-		err = of_mdiobus_register(fep->mii_bus, node);
+	err = of_mdiobus_register(fep->mii_bus, node);
+	if (node)
 		of_node_put(node);
-	} else {
-		err = mdiobus_register(fep->mii_bus);
-	}
-
 	if (err)
 		goto err_out_free_mdiobus;
 

drivers/net/ethernet/marvell/mvmdio.c

···
 		goto out_mdio;
 	}
 
-	if (pdev->dev.of_node)
-		ret = of_mdiobus_register(bus, pdev->dev.of_node);
-	else
-		ret = mdiobus_register(bus);
+	ret = of_mdiobus_register(bus, pdev->dev.of_node);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Cannot register MDIO bus (%d)\n", ret);
 		goto out_mdio;

drivers/net/ethernet/renesas/sh_eth.c

···
 		 pdev->name, pdev->id);
 
 	/* register MDIO bus */
-	if (dev->of_node) {
-		ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
-	} else {
-		if (pd->phy_irq > 0)
-			mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
+	if (pd->phy_irq > 0)
+		mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
 
-		ret = mdiobus_register(mdp->mii_bus);
-	}
-
+	ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
 	if (ret)
 		goto out_free_bus;
 

drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c

···
 	new_bus->phy_mask = mdio_bus_data->phy_mask;
 	new_bus->parent = priv->device;
 
-	if (mdio_node)
-		err = of_mdiobus_register(new_bus, mdio_node);
-	else
-		err = mdiobus_register(new_bus);
+	err = of_mdiobus_register(new_bus, mdio_node);
 	if (err != 0) {
 		dev_err(dev, "Cannot register the MDIO bus\n");
 		goto bus_register_fail;

drivers/net/ethernet/ti/davinci_mdio.c

···
 	 * defined to support backward compatibility with DTs which assume that
 	 * Davinci MDIO will always scan the bus for PHYs detection.
 	 */
-	if (dev->of_node && of_get_child_count(dev->of_node)) {
+	if (dev->of_node && of_get_child_count(dev->of_node))
 		data->skip_scan = true;
-		ret = of_mdiobus_register(data->bus, dev->of_node);
-	} else {
-		ret = mdiobus_register(data->bus);
-	}
+
+	ret = of_mdiobus_register(data->bus, dev->of_node);
 	if (ret)
 		goto bail_out;
 

drivers/net/phy/mdio-gpio.c

···
 	if (!new_bus)
 		return -ENODEV;
 
-	if (pdev->dev.of_node)
-		ret = of_mdiobus_register(new_bus, pdev->dev.of_node);
-	else
-		ret = mdiobus_register(new_bus);
-
+	ret = of_mdiobus_register(new_bus, pdev->dev.of_node);
 	if (ret)
 		mdio_gpio_bus_deinit(&pdev->dev);
 

drivers/net/phy/mdio-mscc-miim.c

···
 		}
 	}
 
-	if (pdev->dev.of_node)
-		ret = of_mdiobus_register(bus, pdev->dev.of_node);
-	else
-		ret = mdiobus_register(bus);
-
+	ret = of_mdiobus_register(bus, pdev->dev.of_node);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Cannot register MDIO bus (%d)\n", ret);
 		return ret;

drivers/net/usb/lan78xx.c

···
 	}
 
 	node = of_get_child_by_name(dev->udev->dev.of_node, "mdio");
-	if (node) {
-		ret = of_mdiobus_register(dev->mdiobus, node);
+	ret = of_mdiobus_register(dev->mdiobus, node);
+	if (node)
 		of_node_put(node);
-	} else {
-		ret = mdiobus_register(dev->mdiobus);
-	}
 	if (ret) {
 		netdev_err(dev->net, "can't register MDIO bus\n");
 		goto exit1;