[PATCH] fix: net: ti: cpts_of_mux_clk_setup: fix device_node reference leak on success path

[WenTao Liang <vulab@iscas.ac.cn>]

of_get_child_by_name acquires a device_node reference for refclk_np, and
  of_clk_add_hw_provider additionally takes an extra reference internally.
  On the success path, the function returns 0 without calling
  of_node_put(refclk_np), leaking the initial reference.

Add of_node_put(refclk_np) before returning success to properly release
  the acquired reference.

Cc: stable@vger.kernel.org
Fixes: a3047a81ba13 ("net: ethernet: ti: cpts: add support for ext rftclk selection")
Signed-off-by: WenTao Liang <vulab@iscas.ac.cn>
---
 drivers/net/ethernet/ti/cpts.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index 2ba4c8795d60..d6e6d074747e 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -714,7 +714,8 @@ static int cpts_of_mux_clk_setup(struct cpts *cpts, struct device_node *node)
 		goto mux_fail;
 	}
 
-	return ret;
+	of_node_put(refclk_np);
+	return 0;
 
 mux_fail:
 	of_node_put(refclk_np);
-- 
2.39.5 (Apple Git-154)