diff --git a/drivers/iio/adc/pac1921.c b/drivers/iio/adc/pac1921.c
index a96fae546bc1..43a3dd321a50 100644
--- a/drivers/iio/adc/pac1921.c
+++ b/drivers/iio/adc/pac1921.c
@@ -1170,7 +1170,9 @@ static int pac1921_probe(struct i2c_client *client)
 		return dev_err_probe(dev, PTR_ERR(priv->regmap),
 				     "Cannot initialize register map\n");
 
-	devm_mutex_init(dev, &priv->lock);
+	ret = devm_mutex_init(dev, &priv->lock);
+	if (ret)
+		return ret;
 
 	priv->dv_gain = PAC1921_DEFAULT_DV_GAIN;
 	priv->di_gain = PAC1921_DEFAULT_DI_GAIN;