The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./arch/arm/mach-sunxi/platsmp.c:55:2-8: ERROR: missing of_node_put; acquired a 
node pointer with refcount incremented on line 46, but without a corresponding 
object release within this function.
./arch/arm/mach-sunxi/platsmp.c:138:2-8: ERROR: missing of_node_put; acquired a 
node pointer with refcount incremented on line 129, but without a corresponding 
object release within this function.

Signed-off-by: Wen Yang <wen.yan...@zte.com.cn>
Cc: Maxime Ripard <maxime.rip...@bootlin.com>
Cc: Chen-Yu Tsai <w...@csie.org>
Cc: Russell King <li...@armlinux.org.uk>
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm/mach-sunxi/platsmp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-sunxi/platsmp.c b/arch/arm/mach-sunxi/platsmp.c
index 8fb5088..c842209 100644
--- a/arch/arm/mach-sunxi/platsmp.c
+++ b/arch/arm/mach-sunxi/platsmp.c
@@ -50,6 +50,7 @@ static void __init sun6i_smp_prepare_cpus(unsigned int 
max_cpus)
        }
 
        prcm_membase = of_iomap(node, 0);
+       of_node_put(node);
        if (!prcm_membase) {
                pr_err("Couldn't map A31 PRCM registers\n");
                return;
@@ -63,6 +64,7 @@ static void __init sun6i_smp_prepare_cpus(unsigned int 
max_cpus)
        }
 
        cpucfg_membase = of_iomap(node, 0);
+       of_node_put(node);
        if (!cpucfg_membase)
                pr_err("Couldn't map A31 CPU config registers\n");
 
-- 
2.9.5

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