bpf_map_area_alloc() should be paired with bpf_map_area_free().
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20220810151840.16394-3-laoar.shao@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>