[PATCH] spmi: pmic-arb: fix return path in for_each_available_child_of_node()

[Javier Carrasco]

This loop requires explicit calls to of_node_put() upon early exits
(break, goto, return) to decrement the child refcounter and avoid memory
leaks if the child is not required out of the loop.

A more robust solution is using the scoped variant of the macro, which
automatically calls of_node_put() when the child goes out of scope.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 979987371739 ("spmi: pmic-arb: Add multi bus support")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
---
 drivers/spmi/spmi-pmic-arb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 9ba9495fcc4b..ea843159b745 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -1763,14 +1763,13 @@ static int spmi_pmic_arb_register_buses(struct spmi_pmic_arb *pmic_arb,
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *node = dev->of_node;
-	struct device_node *child;
 	int ret;
 
 	/* legacy mode doesn't provide child node for the bus */
 	if (of_device_is_compatible(node, "qcom,spmi-pmic-arb"))
 		return spmi_pmic_arb_bus_init(pdev, node, pmic_arb);
 
-	for_each_available_child_of_node(node, child) {
+	for_each_available_child_of_node_scoped(node, child) {
 		if (of_node_name_eq(child, "spmi")) {
 			ret = spmi_pmic_arb_bus_init(pdev, child, pmic_arb);
 			if (ret)

---
base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc
change-id: 20241001-spmi-pmic-arb-scoped-a4b90179edef

Best regards,
-- 
Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>