[PATCH -mm 1/2] proc: exit correctly in /proc/*/maps test

[Alexey Dobriyan]

If open() or writev() fails, test will hang waiting for child test
process.

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

        fold into proc-test-proc-maps-smaps-smaps_rollup-statm.patch

 tools/testing/selftests/proc/proc-pid-vm.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/tools/testing/selftests/proc/proc-pid-vm.c
+++ b/tools/testing/selftests/proc/proc-pid-vm.c
@@ -189,11 +189,11 @@ static int make_exe(const uint8_t *payload, size_t len)
 
        fd = openat(AT_FDCWD, "/tmp", O_WRONLY|O_EXCL|O_TMPFILE, 0700);
        if (fd == -1) {
-               return 1;
+               exit(1);
        }
 
        if (writev(fd, iov, 3) != sizeof(struct elf64_hdr) + sizeof(struct 
elf64_phdr) + len) {
-               return 1;
+               exit(1);
        }
 
        /* Avoid ETXTBSY on exec. */