[PATCH] media: exynos4-is: Fix several reference count leaks due to pm_runtime_get_sync

[wu000273]

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

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>
---
 drivers/media/platform/exynos4-is/fimc-isp.c  | 4 +++-
 drivers/media/platform/exynos4-is/fimc-lite.c | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c 
b/drivers/media/platform/exynos4-is/fimc-isp.c
index cde0d254ec1c..a77c49b18511 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp.c
@@ -305,8 +305,10 @@ static int fimc_isp_subdev_s_power(struct v4l2_subdev *sd, 
int on)
 
        if (on) {
                ret = pm_runtime_get_sync(&is->pdev->dev);
-               if (ret < 0)
+               if (ret < 0) {
+                       pm_runtime_put(&is->pdev->dev);
                        return ret;
+               }
                set_bit(IS_ST_PWR_ON, &is->state);
 
                ret = fimc_is_start_firmware(is);
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c 
b/drivers/media/platform/exynos4-is/fimc-lite.c
index 394e0818f2d5..92130d779137 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -470,7 +470,7 @@ static int fimc_lite_open(struct file *file)
        set_bit(ST_FLITE_IN_USE, &fimc->state);
        ret = pm_runtime_get_sync(&fimc->pdev->dev);
        if (ret < 0)
-               goto unlock;
+               goto err_pm;
 
        ret = v4l2_fh_open(file);
        if (ret < 0)
-- 
2.17.1