[stable 4.19+][PATCH 18/20] ASoC: stm32: sai: add missing put_device()

[Mathieu Poirier]

From: Wen Yang <yellowriver2010@xxxxxxxxxxx>

commit 1c3816a194870e7a6622345dab7fb56c7d708613 upstream

The of_find_device_by_node() takes a reference to the underlying device
structure, we should release that reference.

Fixes: 7dd0d835582f ("ASoC: stm32: sai: simplify sync modes management")
Signed-off-by: Wen Yang <yellowriver2010@xxxxxxxxxxx>
Acked-by: Olivier Moysan <olivier.moysan@xxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx> # 4.19+
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
---
 sound/soc/stm/stm32_sai.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c
index f22654253c43..540c4a00405c 100644
--- a/sound/soc/stm/stm32_sai.c
+++ b/sound/soc/stm/stm32_sai.c
@@ -112,16 +112,21 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client,
 	if (!sai_provider) {
 		dev_err(&sai_client->pdev->dev,
 			"SAI sync provider data not found\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out_put_dev;
 	}
 
 	/* Configure sync client */
 	ret = stm32_sai_sync_conf_client(sai_client, synci);
 	if (ret < 0)
-		return ret;
+		goto out_put_dev;
 
 	/* Configure sync provider */
-	return stm32_sai_sync_conf_provider(sai_provider, synco);
+	ret = stm32_sai_sync_conf_provider(sai_provider, synco);
+
+out_put_dev:
+	put_device(&pdev->dev);
+	return ret;
 }
 
 static int stm32_sai_probe(struct platform_device *pdev)
-- 
2.17.1