Return error instead of QDF_BUG(0) in ol_txrx_peer_attach() when it
times out on duplicate peer detection. Peer unmap events from firmware
may take more than 500 ms timeout observed by this routine.
wma_create_peer() should return error status on failure to create peer.
CRs-Fixed: 2004665
Change-Id: I8368c6320139f97584bd1647f1806a695d4a5929