diff --git a/drivers/iio/adc/pac1921.c b/drivers/iio/adc/pac1921.c
index 36e813d9c73f1c25afe114466ec716a440cf7069..fe1d9e07fce24dc9d3a87dd88356b94443d9c1de 100644
--- a/drivers/iio/adc/pac1921.c
+++ b/drivers/iio/adc/pac1921.c
@@ -1171,7 +1171,9 @@ static int pac1921_probe(struct i2c_client *client)
 		return dev_err_probe(dev, (int)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;