[PATCH] iio: adc: fix for_each_child.cocci warnings

[Julia Lawall]

From: kernel test robot <lkp@xxxxxxxxx>

For_each_child_of_node should have of_node_put() before return.

Generated by: scripts/coccinelle/iterators/for_each_child.cocci

CC: Rajnikant Bhojani <rajnikant.bhojani@xxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Julia Lawall <julia.lawall@xxxxxxxx>
---

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15_LTS
head:   1870e0fa79a9d58c6748c34550f3ccea0b515933
commit: d073b83d3f8f3ba83c59f7502371b1cf9eb35e92 [541/1029] iio: adc: Add Xilinx AMS driver
:::::: branch date: 35 hours ago
:::::: commit date: 8 weeks ago

Please take the patch only if it's a positive warning. Thanks!

 drivers/iio/adc/xilinx-ams.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/iio/adc/xilinx-ams.c
+++ b/drivers/iio/adc/xilinx-ams.c
@@ -920,6 +920,7 @@ static int ams_parse_dt(struct iio_dev *
 					      ams_channels + num_channels);
 			if (ret < 0) {
 				kfree(ams_channels);
+				of_node_put(child_node);
 				return ret;
 			}