[PATCH] media: rcar-vin: Fix a reference count leak.

[wu000273]

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

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus call pm_runtime_put_noidle()
if pm_runtime_get_sync() fails.

Fixes: 90dedce9bc54 ("media: rcar-vin: add function to manipulate Gen3 chsel 
value")
Signed-off-by: Qiushi Wu <wu000...@umn.edu>
---
 drivers/media/platform/rcar-vin/rcar-dma.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c 
b/drivers/media/platform/rcar-vin/rcar-dma.c
index 1a30cd036371..95bc9e0e8792 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -1392,8 +1392,10 @@ int rvin_set_channel_routing(struct rvin_dev *vin, u8 
chsel)
        int ret;
 
        ret = pm_runtime_get_sync(vin->dev);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_noidle(vin->dev);
                return ret;
+       }
 
        /* Make register writes take effect immediately. */
        vnmc = rvin_read(vin, VNMC_REG);
-- 
2.17.1