diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index 73a043b..5442792 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -1439,6 +1439,8 @@
 		err = sunsu_kbd_ms_init(up);
 		if (err)
 			goto out_unmap;
+
+		return 0;
 	}
 
 	up->port.flags |= UPF_BOOT_AUTOCONF;