mm: remove the non-useful else after a break in a if statement

mm: remove the non-useful else after a break in a if statement

Remove the else block since there is already a break in the statement of
if (iter->oom_lock), just set iter->oom_lock true after the if block ends.

Link: https://lkml.kernel.org/r/20241115235744.1419580-4-kerensun@google.com
Signed-off-by: Keren Sun <kerensun@google.com>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>