diff --git a/fs/xfs/libxfs/xfs_iext_tree.c b/fs/xfs/libxfs/xfs_iext_tree.c
index 19e546a412510205a615ac414d1dc1517a2786d6..89bf16b4d9377293fa842c48f2b9b637f83c62c2 100644
--- a/fs/xfs/libxfs/xfs_iext_tree.c
+++ b/fs/xfs/libxfs/xfs_iext_tree.c
@@ -850,9 +850,9 @@ static void
 xfs_iext_free_last_leaf(
 	struct xfs_ifork	*ifp)
 {
-	ifp->if_u1.if_root = NULL;
 	ifp->if_height--;
 	kmem_free(ifp->if_u1.if_root);
+	ifp->if_u1.if_root = NULL;
 }
 
 void