diff --git a/drivers/devfreq/governor_bw_hwmon.c b/drivers/devfreq/governor_bw_hwmon.c
index c379d2ffe6c0..93a820315389 100644
--- a/drivers/devfreq/governor_bw_hwmon.c
+++ b/drivers/devfreq/governor_bw_hwmon.c
@@ -866,6 +866,7 @@ static int devfreq_bw_hwmon_ev_handler(struct devfreq *df,
 		if (ret) {
 			dev_err(df->dev.parent,
 				"Unable to resume HW monitor (%d)\n", ret);
+			mutex_unlock(&sync_lock);
 			return ret;
 		}
 		mutex_unlock(&sync_lock);