[ammarfaizi2-block:google/android/kernel/common/android12-5.4 4032/9999] drivers/dma-buf/heaps/system_heap.c:312:5-8: Unneeded variable: "ret". Return "0" on line 321

[ammarfaizi2-block:google/android/kernel/common/android12-5.4 4032/9999] drivers/dma-buf/heaps/system_heap.c:312:5-8: Unneeded variable: "ret". Return "0" on line 321

[kernel test robot]

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.4
head:   0d36c5d6308623c56e2e94aff13e820cdd676bbf
commit: 44008f99d9ca0793e2562967e1da01fa74ee4a41 [4032/9999] ANDROID: dma-buf: system_heap: Add pagepool support to system heap
config: x86_64-randconfig-c022-20220221 (https://download.01.org/0day-ci/archive/20220223/202202230232.gcmck8F2-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


cocci warnings: (new ones prefixed by >>)
>> drivers/dma-buf/heaps/system_heap.c:312:5-8: Unneeded variable: "ret". Return "0" on line 321

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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

[kernel test robot]

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

drivers/dma-buf/heaps/system_heap.c:312:5-8: Unneeded variable: "ret". Return "0" on line 321


 Remove unneeded variable used to store return value.

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

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.4
head:   0d36c5d6308623c56e2e94aff13e820cdd676bbf
commit: 44008f99d9ca0793e2562967e1da01fa74ee4a41 [4032/9999] ANDROID: dma-buf: system_heap: Add pagepool support to system heap
:::::: branch date: 6 hours ago
:::::: commit date: 1 year ago

 drivers/dma-buf/heaps/system_heap.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/dma-buf/heaps/system_heap.c
+++ b/drivers/dma-buf/heaps/system_heap.c
@@ -309,7 +309,6 @@ static int system_heap_zero_buffer(struc
 	struct sg_page_iter piter;
 	struct page *p;
 	void *vaddr;
-	int ret = 0;
 
 	for_each_sgtable_page(sgt, &piter, 0) {
 		p = sg_page_iter_page(&piter);
@@ -318,7 +317,7 @@ static int system_heap_zero_buffer(struc
 		kunmap_atomic(vaddr);
 	}
 
-	return ret;
+	return 0;
 }
 
 static void system_heap_dma_buf_release(struct dma_buf *dmabuf)