I have found a document which explained how to decrypt WPA2 enterprise, but I couldn't reproduce it in my PC.
https://wiki.wireshark.org/HowToDecrypt802.11
I have downloaded the capture from the link which the document showed,
https://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=wpa-eap-tls.pcap.gz
and used the PMK in the document. Tried 'wpa-psk' and 'wpa-pwd', both of them were not working.
a5001e18e0b3f792278825bc3abff72d7021d7c157b600470ef730e2490835d4 79258f6ceeecedd3482b92deaabdb675f09bcb4003ef5074f5ddb10a94ebe00a 23a9ee58c7810546ae3e7509fda9f97435778d689e53a54891c56d02f18ca162
But it shown as invalid key format.
My Wireshark version is
Version 2.4.6 (v2.4.6-0-ge2f395aa12)