[PATCH 5.18 143/181] iio: adc: aspeed: Fix refcount leak in aspeed_adc_set_trim_data

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@xxxxxxxxx>

commit 8a2b6b5687984a010ed094b4f436a2f091987758 upstream.

of_find_node_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: d0a4c17b4073 ("iio: adc: aspeed: Get and set trimming data.")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220516075206.34580-1-linmq006@xxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/adc/aspeed_adc.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/iio/adc/aspeed_adc.c
+++ b/drivers/iio/adc/aspeed_adc.c
@@ -186,6 +186,7 @@ static int aspeed_adc_set_trim_data(stru
 		return -EOPNOTSUPP;
 	}
 	scu = syscon_node_to_regmap(syscon);
+	of_node_put(syscon);
 	if (IS_ERR(scu)) {
 		dev_warn(data->dev, "Failed to get syscon regmap\n");
 		return -EOPNOTSUPP;