[PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch

[Wang Wensheng]

sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
a WARN issue would be through the next time sparse_buffer_init() runs.

Add the missing sparse_buffer_fini() in error branch.

Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
Signed-off-by: Wang Wensheng <wangwenshe...@huawei.com>
---
 mm/sparse.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/sparse.c b/mm/sparse.c
index 7bd23f9..33406ea 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -547,6 +547,7 @@ static void __init sparse_init_nid(int nid, unsigned long 
pnum_begin,
                        pr_err("%s: node[%d] memory map backing failed. Some 
memory will not be available.",
                               __func__, nid);
                        pnum_begin = pnum;
+                       sparse_buffer_fini();
                        goto failed;
                }
                check_usemap_section_nr(nid, usage);
-- 
2.9.4