cpufreq: zynq: Fix refcount leak in zynq_get_revision

[ Upstream commit d1ff2559cef0f6f8d97fba6337b28adb10689e16 ]

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

Fixes: 00f7dc636366 ("ARM: zynq: Add support for SOC_BUS")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220605082807.21526-1-linmq006@gmail.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/common.c b/arch/arm/mach-zynq/common.c
index e1ca6a5732d27891573cbc2f2a72b3da3ffe81a4..15e8a321a713b7a0ae9ea6e5b1814b721b82a5e0 100644 (file)
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -77,6 +77,7 @@ static int __init zynq_get_revision(void)
        }
 
        zynq_devcfg_base = of_iomap(np, 0);
+       of_node_put(np);
        if (!zynq_devcfg_base) {
                pr_err("%s: Unable to map I/O memory\n", __func__);
                return -1;