[PATCH] Audit and minor cleanups in drivers/usb/*

Changes
- if usb_register fails report back its return code rather than -1

drivers/usb/misc/rio500.c

@@ -530,12 +530,15 @@ static struct usb_driver rio_driver = {
 
 static int __init usb_rio_init(void)
 {
-	if (usb_register(&rio_driver) < 0)
-		return -1;
+	int retval;
+	retval = usb_register(&rio_driver);
+	if (retval)
+		goto out;
 
 	info(DRIVER_VERSION ":" DRIVER_DESC);
 
-	return 0;
+out:
+	return retval;
 }