[PATCH] ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()

[Wang Yufen]

The of_get_next_child() returns a node with refcount incremented, and
decrements the refcount of prev. So in the error path of the while loop,
of_node_put() needs be called for cpu_ep.

Fixes: fce9b90c1ab7 ("ASoC: audio-graph-card: cleanup DAI link loop method - step2")
Signed-off-by: Wang Yufen <wangyufen at huawei.com>
---
 sound/soc/generic/audio-graph-card.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c
index fe7cf97..5daa824 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -485,8 +485,10 @@ static int __graph_for_each_link(struct asoc_simple_priv *priv,
 			of_node_put(codec_ep);
 			of_node_put(codec_port);
 
-			if (ret < 0)
+			if (ret < 0) {
+				of_node_put(cpu_ep);
 				return ret;
+			}
 
 			codec_port_old = codec_port;
 		}
-- 
1.8.3.1