memory: of: Fix refcount leak bug in of_lpddr3_get_ddr_timings()

[ Upstream commit 48af14fb0e ]

We should add the of_node_put() when breaking out of
for_each_child_of_node() as it will automatically increase
and decrease the refcount.

Fixes: 976897dd96 ("memory: Extend of_memory with LPDDR3 support")
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220719085640.1210583-2-windhl@126.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/memory/of_memory.c

@@ -283,6 +283,7 @@ const struct lpddr3_timings
 		if (of_device_is_compatible(np_tim, tim_compat)) {
 			if (of_lpddr3_do_get_timings(np_tim, &timings[i])) {
 				devm_kfree(dev, timings);
+				of_node_put(np_tim);
 				goto default_timings;
 			}
 			i++;