RDMA/cxgb4: Abort connections when moving to ERROR state

If a FINI operation fails, then we need to ABORT instead of CLOSE.
Also, if we ABORT due to unexpected STREAMING data, then wake up
anybody blocked in FINI...

Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>