net: ethernet: ravb: Use devm_platform_get_and_ioremap_resource()

Use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <[e-mail]>
Reviewed-by: Sergei Shtylyov <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/renesas/ravb_main.c

···
 		return -EINVAL;
 	}
 
-	/* Get base address */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "invalid resource\n");
-		return -EINVAL;
-	}
-
 	ndev = alloc_etherdev_mqs(sizeof(struct ravb_private),
 				  NUM_TX_QUEUE, NUM_RX_QUEUE);
 	if (!ndev)
···
 
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_get_sync(&pdev->dev);
-
-	/* The Ether-specific entries in the device structure. */
-	ndev->base_addr = res->start;
 
 	chip_id = (enum ravb_chip_id)of_device_get_match_data(&pdev->dev);
 
···
 	priv->num_rx_ring[RAVB_BE] = BE_RX_RING_SIZE;
 	priv->num_tx_ring[RAVB_NC] = NC_TX_RING_SIZE;
 	priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE;
-	priv->addr = devm_ioremap_resource(&pdev->dev, res);
+	priv->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(priv->addr)) {
 		error = PTR_ERR(priv->addr);
 		goto out_release;
 	}
+
+	/* The Ether-specific entries in the device structure. */
+	ndev->base_addr = res->start;
 
 	spin_lock_init(&priv->lock);
 	INIT_WORK(&priv->work, ravb_tx_timeout_work);