diff --git a/drivers/rtc/rtc-gamecube.c b/drivers/rtc/rtc-gamecube.c
index 18ca3b38b2d0474f58f4a56b3ae94d5afb3f86d9..c2717bb52b2bee9e5996c543ba2212f657bc09d2 100644
--- a/drivers/rtc/rtc-gamecube.c
+++ b/drivers/rtc/rtc-gamecube.c
@@ -267,6 +267,7 @@ static int gamecube_rtc_read_offset_from_sram(struct priv *d)
 	ret = regmap_read(d->regmap, RTC_SRAM_BIAS, &d->rtc_bias);
 	if (ret) {
 		pr_err("failed to get the RTC bias\n");
+		iounmap(hw_srnprot);
 		return -1;
 	}