Input: gameport - check return value of gameport_register_driver()

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/cobra.c b/drivers/input/joystick/cobra.c
index 639b975..3497b87 100644
--- a/drivers/input/joystick/cobra.c
+++ b/drivers/input/joystick/cobra.c
@@ -263,8 +263,7 @@
 
 static int __init cobra_init(void)
 {
-	gameport_register_driver(&cobra_drv);
-	return 0;
+	return gameport_register_driver(&cobra_drv);
 }
 
 static void __exit cobra_exit(void)