diff --git a/drivers/sh/superhyway/superhyway.c b/drivers/sh/superhyway/superhyway.c
index 7d873b3..4d0282b 100644
--- a/drivers/sh/superhyway/superhyway.c
+++ b/drivers/sh/superhyway/superhyway.c
@@ -107,16 +107,17 @@
 static int __init superhyway_init(void)
 {
 	struct superhyway_bus *bus;
-	int ret = 0;
+	int ret;
 
-	device_register(&superhyway_bus_device);
+	ret = device_register(&superhyway_bus_device);
+	if (unlikely(ret))
+		return ret;
 
 	for (bus = superhyway_channels; bus->ops; bus++)
 		ret |= superhyway_scan_bus(bus);
 
 	return ret;
 }
-
 postcore_initcall(superhyway_init);
 
 static const struct superhyway_device_id *