[PATCH 04/10] of: Fix refcount leakage for OF node returned by __of_get_dma_parent()

[Zijun Hu <zijun_hu@icloud.com>]

From: Zijun Hu <quic_zijuhu@quicinc.com>

__of_get_dma_parent() returns OF device node @args.np, but the node's
refcount is increased twice, by both of_parse_phandle_with_args() and
of_node_get(), so causes refcount leakage for the node.

Fix by directly returning the node got by of_parse_phandle_with_args().

Fixes: f83a6e5dea6c ("of: address: Add support for the parent DMA bus")
Cc: stable@vger.kernel.org
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
---
 drivers/of/address.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index c5b925ac469f16b8ae4b8275b60210a2d583ff83..cda1cbb82eabdcd39d32446023fbb105b69bc99d 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -619,7 +619,7 @@ struct device_node *__of_get_dma_parent(const struct device_node *np)
 	if (ret < 0)
 		return of_get_parent(np);
 
-	return of_node_get(args.np);
+	return args.np;
 }
 #endif
 

-- 
2.34.1