Fixes for issues seen while sending multiple REO commands:
- Fix bug in error return from hal_reo API.
- REO status for updates done as part of peer deletion are sometimes
received after peer is deleted, causing crash due to invalid access
in REO command status handler. Fixed by using temporary copies for
rx_tid structures.
- Zero out REO command descriptors before setting up new commands.
Change-Id: I63409eb74fd91a21e0264fb2b3a62efb3a91bfe6