[PATCH 03/20] ASoC: samsung: snow: Fix clock leak in snow_probe()

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

In snow_probe(), priv->clk_i2s_bus is acquired via of_clk_get_by_name().
If devm_snd_soc_register_card() subsequently fails, the acquired clock
is never released, leading to a reference count leak.

Add clk_put() on the error path to release the clock properly.

Fixes: aff8d2bed9e5 ("ASoC: samsung: Add HDMI audio support for Snow")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
---
 sound/soc/samsung/snow.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/samsung/snow.c b/sound/soc/samsung/snow.c
index 66ef49dff1ba..ad99c153e9f8 100644
--- a/sound/soc/samsung/snow.c
+++ b/sound/soc/samsung/snow.c
@@ -211,9 +211,11 @@ static int snow_probe(struct platform_device *pdev)
 	snd_soc_card_set_drvdata(card, priv);
 
 	ret = devm_snd_soc_register_card(dev, card);
-	if (ret)
+	if (ret) {
+		clk_put(priv->clk_i2s_bus);
 		return dev_err_probe(&pdev->dev, ret,
 				     "snd_soc_register_card failed\n");
+	}
 
 	return 0;
 }
-- 
2.34.1