[PATCH] dma-buf: system_heap: Use PTR_ERR_OR_ZERO() to simplify code

[Tian Tao]

Fixes coccicheck warning:
drivers/dma-buf/heaps/system_heap.c:437:1-3: WARNING: PTR_ERR_OR_ZERO
can be used

Signed-off-by: Tian Tao <tiantao6 at hisilicon.com>
---
 drivers/dma-buf/heaps/system_heap.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/dma-buf/heaps/system_heap.c b/drivers/dma-buf/heaps/system_heap.c
index 17e0e9a..c5d8a40 100644
--- a/drivers/dma-buf/heaps/system_heap.c
+++ b/drivers/dma-buf/heaps/system_heap.c
@@ -434,10 +434,8 @@ static int system_heap_create(void)
 	exp_info.priv = NULL;
 
 	sys_heap = dma_heap_add(&exp_info);
-	if (IS_ERR(sys_heap))
-		return PTR_ERR(sys_heap);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(sys_heap);
 }
 module_init(system_heap_create);
 MODULE_LICENSE("GPL v2");
-- 
2.7.4