EAP-GPSK: Report CSuite negotiation failure properly

Setting methodState = DONE for the case where GPSK-1 is found to be
invalid or incompatible allows EAP state machine to proceed to FAILURE
state instead of remaining stuck until AP times out the connection.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/eap_peer/eap_gpsk.c

@@ -289,6 +289,7 @@ static struct wpabuf * eap_gpsk_process_gpsk_1(struct eap_sm *sm,
 	pos = eap_gpsk_process_csuite_list(sm, data, &csuite_list,
 					   &csuite_list_len, pos, end);
 	if (pos == NULL) {
+		ret->methodState = METHOD_DONE;
 		eap_gpsk_state(data, FAILURE);
 		return NULL;
 	}