power: reset: zx-reboot: put device node in zx_reboot_probe()

zx_reboot_probe() increments refcnt of zx296702-pcu device node by
of_find_compatible_node() and leaves it undecremented on both
successful and error paths.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

diff --git a/drivers/power/reset/zx-reboot.c b/drivers/power/reset/zx-reboot.c
index c03e96e..186901c 100644 (file)
--- a/drivers/power/reset/zx-reboot.c
+++ b/drivers/power/reset/zx-reboot.c
@@ -51,6 +51,7 @@ static int zx_reboot_probe(struct platform_device *pdev)
 
        np = of_find_compatible_node(NULL, NULL, "zte,zx296702-pcu");
        pcu_base = of_iomap(np, 0);
+       of_node_put(np);
        if (!pcu_base) {
                iounmap(base);
                WARN(1, "failed to map pcu_base address");