[PATCH 15/15] dmaengine: ti: k3-udma: fix device leak on udma lookup

[Johan Hovold <johan@kernel.org>]

Make sure to drop the reference taken when looking up the UDMA platform
device.

Note that holding a reference to a platform device does not prevent its
driver data from going away so there is no point in keeping the
reference after the lookup helper returns.

Fixes: d70241913413 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine users")
Fixes: 1438cde8fe9c ("dmaengine: ti: k3-udma: add missing put_device() call in of_xudma_dev_get()")
Cc: stable@vger.kernel.org	# 5.6: 1438cde8fe9c
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/dma/ti/k3-udma-private.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c
index 05228bf00033..624360423ef1 100644
--- a/drivers/dma/ti/k3-udma-private.c
+++ b/drivers/dma/ti/k3-udma-private.c
@@ -42,9 +42,9 @@ struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property)
 	}
 
 	ud = platform_get_drvdata(pdev);
+	put_device(&pdev->dev);
 	if (!ud) {
 		pr_debug("UDMA has not been probed\n");
-		put_device(&pdev->dev);
 		return ERR_PTR(-EPROBE_DEFER);
 	}
 
-- 
2.51.0