[PATCH] iio: adc: max1027: fix not unregistered iio trigger

[Chuhong Yuan]

The driver forgets to unregister the iio trigger in probe failure and
remove.
Use devm API to fix it.

Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
---
 drivers/iio/adc/max1027.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 214883458582..8caead7dffa5 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -446,7 +446,12 @@ static int max1027_probe(struct spi_device *spi)
 	st->trig->ops = &max1027_trigger_ops;
 	st->trig->dev.parent = &spi->dev;
 	iio_trigger_set_drvdata(st->trig, indio_dev);
-	iio_trigger_register(st->trig);
+
+	ret = devm_iio_trigger_register(&spi->dev, st->trig);
+	if (ret < 0) {
+		dev_err(&indio_dev->dev, "Failed to register iio trigger\n");
+		return ret;
+	}
 
 	ret = devm_request_threaded_irq(&spi->dev, spi->irq,
 					iio_trigger_generic_data_rdy_poll,
-- 
2.24.0