[PATCH v2] selftests/mm/cow: Fix the incorrect error handling

[Cyan Yang <cyan.yang@xxxxxxxxxx>]

There is an error handling did not check the correct return value.
This patch will fix it.

Fixes: f4b5fd6946e244cdedc3bbb9a1f24c8133b2077a ("selftests/vm: anon_cow: THP tests")
Signed-off-by: Cyan Yang <cyan.yang@xxxxxxxxxx>
---
 tools/testing/selftests/mm/cow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index 9446673645eb..f0cb14ea8608 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -876,7 +876,7 @@ static void do_run_with_thp(test_fn fn, enum thp_run thp_run, size_t thpsize)
 		mremap_size = thpsize / 2;
 		mremap_mem = mmap(NULL, mremap_size, PROT_NONE,
 				  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-		if (mem == MAP_FAILED) {
+		if (mremap_mem == MAP_FAILED) {
 			ksft_test_result_fail("mmap() failed\n");
 			goto munmap;
 		}
-- 
2.39.5 (Apple Git-154)