Input: gameport - check return value of gameport_register_driver()

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c
index 7b4865f..ca13a6b 100644
--- a/drivers/input/joystick/sidewinder.c
+++ b/drivers/input/joystick/sidewinder.c
@@ -818,8 +818,7 @@
 
 static int __init sw_init(void)
 {
-	gameport_register_driver(&sw_drv);
-	return 0;
+	return gameport_register_driver(&sw_drv);
 }
 
 static void __exit sw_exit(void)