f2fs: fix to do sanity check on extent cache correctly

commit d48a7b3 upstream.

In do_read_inode(), sanity_check_inode() should be called after
f2fs_init_read_extent_tree(), fix it.

Fixes: 72840cc ("f2fs: allocate the extent_cache by default")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/f2fs/inode.c

@@ -413,12 +413,6 @@ static int do_read_inode(struct inode *inode)
 		fi->i_inline_xattr_size = 0;
 	}
 
-	if (!sanity_check_inode(inode, node_page)) {
-		f2fs_put_page(node_page, 1);
-		f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
-		return -EFSCORRUPTED;
-	}
-
 	/* check data exist */
 	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 		__recover_inline_status(inode, node_page);
@@ -481,6 +475,12 @@ static int do_read_inode(struct inode *inode)
 	/* Need all the flag bits */
 	f2fs_init_read_extent_tree(inode, node_page);
 
+	if (!sanity_check_inode(inode, node_page)) {
+		f2fs_put_page(node_page, 1);
+		f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
+		return -EFSCORRUPTED;
+	}
+
 	f2fs_put_page(node_page, 1);
 
 	stat_inc_inline_xattr(inode);