[PATCH] PM / devfreq: mediatek: unlock on error in mtk_ccifreq_target()

[Dan Carpenter]

Call mutex_unlock(&drv->reg_lock) before returning the error code.

Fixes: d2805601988f ("PM / devfreq: mediatek: protect oop in critical session")
Signed-off-by: Dan Carpenter <dan.carpenter at linaro.org>
---
 drivers/devfreq/mtk-cci-devfreq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/mtk-cci-devfreq.c b/drivers/devfreq/mtk-cci-devfreq.c
index b0ed25e33f2b..11bc3d03494c 100644
--- a/drivers/devfreq/mtk-cci-devfreq.c
+++ b/drivers/devfreq/mtk-cci-devfreq.c
@@ -146,7 +146,8 @@ static int mtk_ccifreq_target(struct device *dev, unsigned long *freq,
 	opp = devfreq_recommended_opp(dev, &opp_rate, 1);
 	if (IS_ERR(opp)) {
 		dev_err(dev, "failed to find opp for freq: %ld\n", opp_rate);
-		return PTR_ERR(opp);
+		ret = PTR_ERR(opp);
+		goto out_unlock;
 	}
 
 	voltage = dev_pm_opp_get_voltage(opp);
-- 
2.39.2