STA vdev is moved to UP state in wma_add_sta_req_sta_mode but
if deauth is received from AP during that time the connection
is set to failure in lim_process_sta_mlm_add_sta_rsp and driver
send EV_CONNECTION_FAIL in UP state which is not handled.
To fix this move the STA to UP state only if
lim_handle_sme_join_result receive the add sta rsp success.
Change-Id: Icb0685e52881563e17785c98e9e225796a864be1
CRs-Fixed: 2415194