[PATCH v1] PCI: rcar: Release temporary device tree node reference

[Yuho Choi <dbgh9129@gmail.com>]

of_find_matching_node() returns a referenced node even when it is used
only as a boolean test. Keep the result in a scoped cleanup variable
so the reference is released after the match check.

Fixes: a115b1bd3af0 ("PCI: rcar: Add L1 link state fix into data abort hook")
Signed-off-by: Yuho Choi <dbgh9129@gmail.com>
---
 drivers/pci/controller/pcie-rcar-host.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c
index cd9171eebc28..7ed1bc0732ce 100644
--- a/drivers/pci/controller/pcie-rcar-host.c
+++ b/drivers/pci/controller/pcie-rcar-host.c
@@ -1122,7 +1122,10 @@ static const struct of_device_id rcar_pcie_abort_handler_of_match[] __initconst
 
 static int __init rcar_pcie_init(void)
 {
-	if (of_find_matching_node(NULL, rcar_pcie_abort_handler_of_match)) {
+	struct device_node *np __free(device_node) =
+		of_find_matching_node(NULL, rcar_pcie_abort_handler_of_match);
+
+	if (np) {
 #ifdef CONFIG_ARM_LPAE
 		hook_fault_code(17, rcar_pcie_aarch32_abort_handler, SIGBUS, 0,
 				"asynchronous external abort");
-- 
2.43.0