xfs: xfs_qm: remove unnecessary ‘0’ values from error

error is assigned first, so it does not need to initialize the
assignment.

Signed-off-by: Li zeming <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>

Author: Li zeming

fs/xfs/xfs_qm.c

@@ -68,7 +68,7 @@ xfs_qm_dquot_walk(
 
 	while (1) {
 		struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH];
-		int		error = 0;
+		int		error;
 		int		i;
 
 		mutex_lock(&qi->qi_tree_lock);