xfs: set btree block buffer ops in _init_buf

Set the btree block buffer ops in xfs_btree_init_buf since we already
have access to that information through the btree ops.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

fs/xfs/libxfs/xfs_bmap.c

@@ -688,7 +688,6 @@ xfs_bmap_extents_to_btree(
 	/*
 	 * Fill in the child block.
 	 */
-	abp->b_ops = &xfs_bmbt_buf_ops;
 	ablock = XFS_BUF_TO_BLOCK(abp);
 	xfs_bmbt_init_block(ip, ablock, abp, 0, 0);
 

fs/xfs/libxfs/xfs_btree.c

@@ -1219,6 +1219,7 @@ xfs_btree_init_buf(
 {
 	__xfs_btree_init_block(mp, XFS_BUF_TO_BLOCK(bp), ops,
 			xfs_buf_daddr(bp), level, numrecs, owner);
+	bp->b_ops = ops->buf_ops;
 }
 
 void