xfs: fix uninitialized return values in scrub code

Fix smatch complaints about uninitialized return codes.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

fs/xfs/scrub/dir.c

@@ -748,7 +748,7 @@ xfs_scrub_directory(
 	};
 	size_t				bufsize;
 	loff_t				oldpos;
-	int				error;
+	int				error = 0;
 
 	if (!S_ISDIR(VFS_I(sc->ip)->i_mode))
 		return -ENOENT;

fs/xfs/scrub/parent.c

@@ -143,7 +143,7 @@ xfs_scrub_parent_validate(
 	struct xfs_inode		*dp = NULL;
 	xfs_nlink_t			expected_nlink;
 	xfs_nlink_t			nlink;
-	int				error;
+	int				error = 0;
 
 	*try_again = false;
 
@@ -258,7 +258,7 @@ xfs_scrub_parent(
 	xfs_ino_t			dnum;
 	bool				try_again;
 	int				tries = 0;
-	int				error;
+	int				error = 0;
 
 	/*
 	 * If we're a directory, check that the '..' link points up to