diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index 4b18498aa074..9a384c50929b 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -494,7 +494,9 @@ int ad5686_probe(struct device *dev,
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
-	mutex_init(&st->lock);
+	ret = devm_mutex_init(dev, &st->lock);
+	if (ret)
+		return ret;
 
 	switch (st->chip_info->regmap_type) {
 	case AD5310_REGMAP: