diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index abe99856c823..cc81b35ca47a 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -616,8 +616,10 @@ static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *idev,
 	trig->ops = &at91_adc_trigger_ops;
 
 	ret = iio_trigger_register(trig);
-	if (ret)
+	if (ret) {
+		iio_trigger_free(trig);
 		return NULL;
+	}
 
 	return trig;
 }