[PATCH] arch: arm: mach-alpine: Add missing of_node_put() in alphine_cpu_pm.c

[Liang He]

In alpine_cpu_pm_init(), of_find_compatible_node() will return a node
pointer with refcount incremented. We should use of_node_put() when it
is not used anymore.

Signed-off-by: Liang He <windhl at 126.com>
---
 arch/arm/mach-alpine/alpine_cpu_pm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-alpine/alpine_cpu_pm.c b/arch/arm/mach-alpine/alpine_cpu_pm.c
index 13ae8412e9ce..cc201a90d23c 100644
--- a/arch/arm/mach-alpine/alpine_cpu_pm.c
+++ b/arch/arm/mach-alpine/alpine_cpu_pm.c
@@ -51,6 +51,8 @@ void __init alpine_cpu_pm_init(void)
 	np = of_find_compatible_node(NULL, NULL, "al,alpine-cpu-resume");
 	al_cpu_resume_regs = of_iomap(np, 0);
 
+	of_node_put(np);
+
 	wakeup_supported = !IS_ERR(al_sysfabric) && al_cpu_resume_regs;
 
 	if (wakeup_supported) {
-- 
2.25.1