[PATCH v2 13/14] iio: dac: ad5770r: Use device_for_each_child_node_scoped()

[Jonathan Cameron <jic23@kernel.org>]

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

Switching to the _scoped() version removes the need for manual
calling of fwnode_handle_put() in the paths where the code
exits the loop early. In this case that's all in error paths.

Cc: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/dac/ad5770r.c | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c
index f66d67402e43..c360ebf5297a 100644
--- a/drivers/iio/dac/ad5770r.c
+++ b/drivers/iio/dac/ad5770r.c
@@ -515,39 +515,32 @@ static int ad5770r_channel_config(struct ad5770r_state *st)
 {
 	int ret, tmp[2], min, max;
 	unsigned int num;
-	struct fwnode_handle *child;
 
 	num = device_get_child_node_count(&st->spi->dev);
 	if (num != AD5770R_MAX_CHANNELS)
 		return -EINVAL;
 
-	device_for_each_child_node(&st->spi->dev, child) {
+	device_for_each_child_node_scoped(&st->spi->dev, child) {
 		ret = fwnode_property_read_u32(child, "reg", &num);
 		if (ret)
-			goto err_child_out;
-		if (num >= AD5770R_MAX_CHANNELS) {
-			ret = -EINVAL;
-			goto err_child_out;
-		}
+			return ret;
+		if (num >= AD5770R_MAX_CHANNELS)
+			return -EINVAL;
 
 		ret = fwnode_property_read_u32_array(child,
 						     "adi,range-microamp",
 						     tmp, 2);
 		if (ret)
-			goto err_child_out;
+			return ret;
 
 		min = tmp[0] / 1000;
 		max = tmp[1] / 1000;
 		ret = ad5770r_store_output_range(st, min, max, num);
 		if (ret)
-			goto err_child_out;
+			return ret;
 	}
 
 	return 0;
-
-err_child_out:
-	fwnode_handle_put(child);
-	return ret;
 }
 
 static int ad5770r_init(struct ad5770r_state *st)
-- 
2.43.1