[PATCH AUTOSEL 5.8 012/101] media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync

[Sasha Levin]

From: Qiushi Wu <wu000...@umn.edu>

[ Upstream commit c47f7c779ef0458a58583f00c9ed71b7f5a4d0a2 ]

On calling pm_runtime_get_sync() the reference count of the device
is incremented. In case of failure, decrement the
reference count before returning the error.

Signed-off-by: Qiushi Wu <wu000...@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/media/platform/exynos4-is/media-dev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/exynos4-is/media-dev.c 
b/drivers/media/platform/exynos4-is/media-dev.c
index 9c31d950cddf7..29e12d57b12d7 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -484,8 +484,10 @@ static int fimc_md_register_sensor_entities(struct fimc_md 
*fmd)
                return -ENXIO;
 
        ret = pm_runtime_get_sync(fmd->pmf);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put(fmd->pmf);
                return ret;
+       }
 
        fmd->num_sensors = 0;
 
-- 
2.25.1