[PATCH 6/8] iio: adc: ad7124: Use for_each_available_child_of_node_scoped()

[Jonathan Cameron <jic23@kernel.org>]

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Avoids the need for manual cleanup of_node_put() in early exits
from the loop.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/adc/ad7124.c | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index b9b206fcd748..67ccdad752c5 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -813,7 +813,6 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 	struct ad7124_state *st = iio_priv(indio_dev);
 	struct ad7124_channel_config *cfg;
 	struct ad7124_channel *channels;
-	struct device_node *child;
 	struct iio_chan_spec *chan;
 	unsigned int ain[2], channel = 0, tmp;
 	int ret;
@@ -838,24 +837,21 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 	indio_dev->num_channels = st->num_channels;
 	st->channels = channels;
 
-	for_each_available_child_of_node(np, child) {
+	for_each_available_child_of_node_scoped(np, child) {
 		cfg = &st->channels[channel].cfg;
 
 		ret = of_property_read_u32(child, "reg", &channel);
 		if (ret)
-			goto err;
+			return ret;
 
-		if (channel >= indio_dev->num_channels) {
-			dev_err(indio_dev->dev.parent,
-				"Channel index >= number of channels\n");
-			ret = -EINVAL;
-			goto err;
-		}
+		if (channel >= indio_dev->num_channels)
+			return dev_err_probe(indio_dev->dev.parent, -EINVAL,
+					     "Channel index >= number of channels\n");
 
 		ret = of_property_read_u32_array(child, "diff-channels",
 						 ain, 2);
 		if (ret)
-			goto err;
+			return ret;
 
 		st->channels[channel].nr = channel;
 		st->channels[channel].ain = AD7124_CHANNEL_AINP(ain[0]) |
@@ -880,10 +876,6 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 	}
 
 	return 0;
-err:
-	of_node_put(child);
-
-	return ret;
 }
 
 static int ad7124_setup(struct ad7124_state *st)
-- 
2.43.1