damon/sysfs: Fix possible memleak on damon_sysfs_add_target.

When damon_sysfs_add_target couldn't find proper task, New allocated damon_target structure isn't registered yet, So, it's impossible to free new allocated one by damon_sysfs_destroy_targets.

By calling damon_add_target first as soon as allocate new one, Fix possible memory leak.

Signed-off-by Levi Yun <[email protected]>

---
 mm/damon/sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

mm/damon/sysfs.c +1 -2

index 7488e27c87c3..bdef9682d0a0 100644
@@ -2182,12 +2182,12 @@ static int damon_sysfs_add_target(struct damon_sysfs_target *sys_target,
 
        if (!t)
                return -ENOMEM;
+       damon_add_target(ctx, t);
        if (damon_target_has_pid(ctx)) {
                t->pid = find_get_pid(sys_target->pid);
                if (!t->pid)
                        goto destroy_targets_out;
        }
-       damon_add_target(ctx, t);
        err = damon_sysfs_set_regions(t, sys_target->regions);
        if (err)
                goto destroy_targets_out;
--

2.35.1