ARM: zynq: Fix refcount leak in zynq_early_slcr_init

[ Upstream commit 9eedb910a3be0005b88c696a8552c0d4c9937cd4 ]

of_find_compatible_node() returns a node pointer with refcount incremented,
we should use of_node_put() on error path.
Add missing of_node_put() to avoid refcount leak.

Fixes: 3329659df030 ("ARM: zynq: Simplify SLCR initialization")
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Link: https://lore.kernel.org/r/20221129140544.41293-1-linqiheng@huawei.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index 3770761..9765b3f 100644 (file)
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -213,6 +213,7 @@ int __init zynq_early_slcr_init(void)
        zynq_slcr_regmap = syscon_regmap_lookup_by_compatible("xlnx,zynq-slcr");
        if (IS_ERR(zynq_slcr_regmap)) {
                pr_err("%s: failed to find zynq-slcr\n", __func__);
+               of_node_put(np);
                return -ENODEV;
        }