[irqchip: irq/irqchip-fixes] irqchip/apple-aic: Fix refcount leak in build_fiq_affinity

[irqchip-bot for Miaoqian Lin]

The following commit has been merged into the irq/irqchip-fixes branch of irqchip:

Commit-ID:     b1ac803f47cb1615468f35cf1ccb553c52087301
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/b1ac803f47cb1615468f35cf1ccb553c52087301
Author:        Miaoqian Lin <linmq006@xxxxxxxxx>
AuthorDate:    Wed, 01 Jun 2022 12:09:26 +04:00
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Thu, 09 Jun 2022 17:36:57 +01:00

irqchip/apple-aic: Fix refcount leak in build_fiq_affinity

of_find_node_by_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: a5e8801202b3 ("irqchip/apple-aic: Parse FIQ affinities from device-tree")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220601080930.31005-3-linmq006@xxxxxxxxx
---
 drivers/irqchip/irq-apple-aic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index 12dd487..478d0af 100644
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c
@@ -1035,6 +1035,7 @@ static void build_fiq_affinity(struct aic_irq_chip *ic, struct device_node *aff)
 			continue;
 
 		cpu = of_cpu_node_to_id(cpu_node);
+		of_node_put(cpu_node);
 		if (WARN_ON(cpu < 0))
 			continue;