ARM: meson: Fix refcount leak in meson_smp_prepare_cpus

[ Upstream commit 34d2cd3fccced12b958b8848e3eff0ee4296764c ]

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: d850f3e5d296 ("ARM: meson: Add SMP bringup code for Meson8 and Meson8b")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220512021611.47921-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm/mach-meson/platsmp.c b/arch/arm/mach-meson/platsmp.c
index 4b8ad728bb42aa68b852e3dfee0b1c656e388426..32ac60b89fdcc5e48716f67c48d91498abff5ab7 100644 (file)
--- a/arch/arm/mach-meson/platsmp.c
+++ b/arch/arm/mach-meson/platsmp.c
@@ -71,6 +71,7 @@ static void __init meson_smp_prepare_cpus(const char *scu_compatible,
        }
 
        sram_base = of_iomap(node, 0);
+       of_node_put(node);
        if (!sram_base) {
                pr_err("Couldn't map SRAM registers\n");
                return;
@@ -91,6 +92,7 @@ static void __init meson_smp_prepare_cpus(const char *scu_compatible,
        }
 
        scu_base = of_iomap(node, 0);
+       of_node_put(node);
        if (!scu_base) {
                pr_err("Couldn't map SCU registers\n");
                return;