bpf: Only call maybe_wait_bpf_programs() when map operation succeeds

There is no need to call maybe_wait_bpf_programs() if update or deletion
operation fails. So only call maybe_wait_bpf_programs() if update or
deletion operation succeeds.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20231208102355.2628918-5-houtao@huaweicloud.com


Signed-off-by: Alexei Starovoitov <ast@kernel.org>