diff --git a/drivers/serial/8250_gsc.c b/drivers/serial/8250_gsc.c
index 913c71c..1ebe6b5 100644
--- a/drivers/serial/8250_gsc.c
+++ b/drivers/serial/8250_gsc.c
@@ -64,6 +64,7 @@
 	err = serial8250_register_port(&port);
 	if (err < 0) {
 		printk(KERN_WARNING "serial8250_register_port returned error %d\n", err);
+		iounmap(port.membase);
 		return err;
 	}