[PATCH] fs: direct-io: Remove redundant assignment to retval

[Jiapeng Chong <jiapeng.chong@linux.alibaba.com>]

Variable retval is set to zero but this value is never read as it is
overwritten with a new value later on, hence it is a redundant
assignment and can be removed.

Cleans up the following clang-analyzer warning:

fs/direct-io.c:1245:2: warning: Value stored to 'retval' is never read
[clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
---
 fs/direct-io.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/direct-io.c b/fs/direct-io.c
index b2e86e7..b348264 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1242,7 +1242,6 @@ static inline int drop_refcount(struct dio *dio)
 	 */
 	inode_dio_begin(inode);
 
-	retval = 0;
 	sdio.blkbits = blkbits;
 	sdio.blkfactor = i_blkbits - blkbits;
 	sdio.block_in_file = offset >> blkbits;
-- 
1.8.3.1