There are some cases failed when clean up context

[Wenxing-hou]

test suite (spdm_responder_conformance_test) - pass: 2088, fail: 9
      test group 2 (spdm_test_group_capabilities) - pass: 74, fail: 3
      test group 6 (spdm_test_group_challenge_auth) - pass: 303, fail: 4
      test group 8 (spdm_test_group_key_exchange_rsp) - pass: 327, fail: 1
      test group 9 (spdm_test_group_finish_rsp) - pass: 152, fail: 1