[PATCH] dma-buf/resv: fix exclusive fence get

[Qiang Yu]

This causes kernel crash when testing lima driver.

Cc: Christian König <christian.koe...@amd.com>
Fixes: b8c036dfc66f ("dma-buf: simplify reservation_object_get_fences_rcu a 
bit")
Signed-off-by: Qiang Yu <yuq...@gmail.com>
---
 drivers/dma-buf/dma-resv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 42a8f3f11681..709002515550 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -471,7 +471,7 @@ int dma_resv_get_fences_rcu(struct dma_resv *obj,
        if (pfence_excl)
                *pfence_excl = fence_excl;
        else if (fence_excl)
-               shared[++shared_count] = fence_excl;
+               shared[shared_count++] = fence_excl;
 
        if (!shared_count) {
                kfree(shared);
-- 
2.17.1