Input: handle serio_register_driver() errors

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/spaceorb.c b/drivers/input/joystick/spaceorb.c
index ea9d51e..c9c7921 100644
--- a/drivers/input/joystick/spaceorb.c
+++ b/drivers/input/joystick/spaceorb.c
@@ -246,8 +246,7 @@
 
 static int __init spaceorb_init(void)
 {
-	serio_register_driver(&spaceorb_drv);
-	return 0;
+	return serio_register_driver(&spaceorb_drv);
 }
 
 static void __exit spaceorb_exit(void)