irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe

[ Upstream commit 02298b7bae12936ca313975b02e7f98b06670d37 ]

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

Fixes: cd844b0715ce ("irqchip/ti-sci-intr: Add support for Interrupt Router driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230102085611.3955984-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/irqchip/irq-ti-sci-intr.c b/drivers/irqchip/irq-ti-sci-intr.c
index fe8fad2..020ddf2 100644 (file)
--- a/drivers/irqchip/irq-ti-sci-intr.c
+++ b/drivers/irqchip/irq-ti-sci-intr.c
@@ -236,6 +236,7 @@ static int ti_sci_intr_irq_domain_probe(struct platform_device *pdev)
        }
 
        parent_domain = irq_find_host(parent_node);
+       of_node_put(parent_node);
        if (!parent_domain) {
                dev_err(dev, "Failed to find IRQ parent domain\n");
                return -ENODEV;