usb: otg: OMAP4430: Fixing the omap4430_phy_init function

omap4430_phy_init() function can be called with no device pointer,
to powerdown the PHY during board init when USB is disabled.
Fix the function accordingly.
Signed-off-by: NHema HK <hemahk@ti.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

arch/arm/mach-omap2/omap_phy_internal.c

@@ -50,13 +50,16 @@ int omap4430_phy_init(struct device *dev)
 {
 	ctrl_base = ioremap(OMAP443X_SCM_BASE, SZ_1K);
 	if (!ctrl_base) {
-		dev_err(dev, "control module ioremap failed\n");
+		pr_err("control module ioremap failed\n");
 		return -ENOMEM;
 	}
 	/* Power down the phy */
 	__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
-	phyclk = clk_get(dev, "ocp2scp_usb_phy_ick");
 
+	if (!dev)
+		return 0;
+
+	phyclk = clk_get(dev, "ocp2scp_usb_phy_ick");
 	if (IS_ERR(phyclk)) {
 		dev_err(dev, "cannot clk_get ocp2scp_usb_phy_ick\n");
 		iounmap(ctrl_base);