[PATCH] dma-buf: heaps: fix returnvar.cocci warnings

[Julia Lawall <julia.lawall@inria.fr>]

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From: kernel test robot <lkp@intel.com>

Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

CC: John Stultz <john.stultz@linaro.org>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
---

url:    https://github.com/0day-ci/linux/commits/John-Stultz/dma-buf-Performance-improvements-for-system-heap/20200926-122541
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git bcf876870b95592b52519ed4aafcf9d95999bc9c
:::::: branch date: 6 hours ago
:::::: commit date: 6 hours ago

Minor issue...

 cma_heap.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/dma-buf/heaps/cma_heap.c
+++ b/drivers/dma-buf/heaps/cma_heap.c
@@ -116,7 +116,6 @@ static int cma_heap_dma_buf_begin_cpu_ac
 {
 	struct cma_heap_buffer *buffer = dmabuf->priv;
 	struct dma_heap_attachment *a;
-	int ret = 0;

 	if (buffer->vmap_cnt)
 		invalidate_kernel_vmap_range(buffer->vaddr, buffer->len);
@@ -128,7 +127,7 @@ static int cma_heap_dma_buf_begin_cpu_ac
 	}
 	mutex_unlock(&buffer->lock);

-	return ret;
+	return 0;
 }

 static int cma_heap_dma_buf_end_cpu_access(struct dma_buf *dmabuf,