Input: gameport - check return value of gameport_register_driver()

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/a3d.c b/drivers/input/joystick/a3d.c
index 92498d4..6489f40 100644
--- a/drivers/input/joystick/a3d.c
+++ b/drivers/input/joystick/a3d.c
@@ -414,8 +414,7 @@
 
 static int __init a3d_init(void)
 {
-	gameport_register_driver(&a3d_drv);
-	return 0;
+	return gameport_register_driver(&a3d_drv);
 }
 
 static void __exit a3d_exit(void)