phy: fix returnvar.cocci warnings

Remove unneeded variables when "0" can be returned.

Generated by: scripts/coccinelle/misc/returnvar.cocci

Signed-off-by: Vivek Gautam <[e-mail]>
Cc: Kishon Vijay Abraham I <[e-mail]>
Signed-off-by: Kishon Vijay Abraham I <[e-mail]>

drivers/phy/phy-berlin-sata.c

···
 	struct phy_berlin_desc *desc = phy_get_drvdata(phy);
 	struct phy_berlin_priv *priv = dev_get_drvdata(phy->dev.parent);
 	void __iomem *ctrl_reg = priv->base + 0x60 + (desc->index * 0x80);
-	int ret = 0;
 	u32 regval;
 
 	clk_prepare_enable(priv->clk);
···
 
 	clk_disable_unprepare(priv->clk);
 
-	return ret;
+	return 0;
 }
 
 static int phy_berlin_sata_power_off(struct phy *phy)

drivers/phy/tegra/xusb-tegra124.c

···
 	struct tegra_xusb_padctl *padctl = port->padctl;
 	struct tegra_xusb_lane *lane = usb3->base.lane;
 	unsigned int index = port->index, offset;
-	int ret = 0;
 	u32 value;
 
 	value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
···
 	value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(index);
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
 
-	return ret;
+	return 0;
 }
 
 static void tegra124_usb3_port_disable(struct tegra_xusb_port *port)