usb: phy: signedness bugs in suspend/resume functions

"ret" needs to be signed for the error handling to work.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-omap-usb2.c

@@ -98,8 +98,8 @@ static int omap_usb_set_peripheral(struct usb_otg *otg,
 
 static int omap_usb2_suspend(struct usb_phy *x, int suspend)
 {
-	u32 ret;
 	struct omap_usb *phy = phy_to_omapusb(x);
+	int ret;
 
 	if (suspend && !phy->is_suspended) {
 		omap_control_usb_phy_power(phy->control_dev, 0);
@@ -108,8 +108,7 @@ static int omap_usb2_suspend(struct usb_phy *x, int suspend)
 	} else if (!suspend && phy->is_suspended) {
 		ret = pm_runtime_get_sync(phy->dev);
 		if (ret < 0) {
-			dev_err(phy->dev, "get_sync failed with err %d\n",
-									ret);
+			dev_err(phy->dev, "get_sync failed with err %d\n", ret);
 			return ret;
 		}
 		omap_control_usb_phy_power(phy->control_dev, 1);
@@ -209,9 +208,9 @@ static int omap_usb2_runtime_suspend(struct device *dev)
 
 static int omap_usb2_runtime_resume(struct device *dev)
 {
-	u32 ret = 0;
 	struct platform_device	*pdev = to_platform_device(dev);
 	struct omap_usb	*phy = platform_get_drvdata(pdev);
+	int ret;
 
 	ret = clk_enable(phy->wkupclk);
 	if (ret < 0) {