irqchip/apple-aic: Fix refcount leak in build_fiq_affinity

[ Upstream commit b1ac803f47cb1615468f35cf1ccb553c52087301 ]

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@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220601080930.31005-3-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index 12dd48727a15f6ea87a2d04a8656b438e5575eff..478d0af16d9fa95f7e5d58260c0f1e369b82d0ed 100644 (file)
--- 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;