Input: make input_register_handler() return error codes

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/evbug.c b/drivers/input/evbug.c
index 1d8ce7a..5a9653c 100644
--- a/drivers/input/evbug.c
+++ b/drivers/input/evbug.c
@@ -91,8 +91,7 @@
 
 static int __init evbug_init(void)
 {
-	input_register_handler(&evbug_handler);
-	return 0;
+	return input_register_handler(&evbug_handler);
 }
 
 static void __exit evbug_exit(void)