[PATCH] selftests/mm: Add missing free.

[zhangjiao2]

From: zhang jiao <zhangji...@cmss.chinamobile.com>

There is a memory leak in mkdirty, just free src before return.

Signed-off-by: zhang jiao <zhangji...@cmss.chinamobile.com>
---
 tools/testing/selftests/mm/mkdirty.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/mm/mkdirty.c 
b/tools/testing/selftests/mm/mkdirty.c
index 1db134063c38..af2fce496912 100644
--- a/tools/testing/selftests/mm/mkdirty.c
+++ b/tools/testing/selftests/mm/mkdirty.c
@@ -280,6 +280,7 @@ static void test_uffdio_copy(void)
        dst = mmap(NULL, pagesize, PROT_READ, MAP_PRIVATE|MAP_ANON, -1, 0);
        if (dst == MAP_FAILED) {
                ksft_test_result_fail("mmap() failed\n");
+               free(src);
                return;
        }
 
-- 
2.33.0