[PATCH] dma-buf/sw_sync: Decrement refcount on error in sw_sync_ioctl_get_deadline()

[Dan Carpenter]

Call dma_fence_put(fence) before returning an error on this error path.

Fixes: 70e67aaec2f4 ("dma-buf/sw_sync: Add fence deadline support")
Signed-off-by: Dan Carpenter <dan.carpen...@linaro.org>
---
 drivers/dma-buf/sw_sync.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index f5905d67dedb..b7615c5c6cac 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -438,8 +438,10 @@ static int sw_sync_ioctl_get_deadline(struct sync_timeline 
*obj, unsigned long a
                return -EINVAL;
 
        pt = dma_fence_to_sync_pt(fence);
-       if (!pt)
+       if (!pt) {
+               dma_fence_put(fence);
                return -EINVAL;
+       }
 
        spin_lock_irqsave(fence->lock, flags);
        if (test_bit(SW_SYNC_HAS_DEADLINE_BIT, &fence->flags)) {
-- 
2.47.2