sif: sif_eq: fix missing qp->refcnt decrement for COMM_EST events

sif: sif_eq: fix missing qp->refcnt decrement for COMM_EST events

qp->refcnt is increased by 1 when event_status_communication_established
is dispatched but later it is not decremented when handling the event
work for IB_EVENT_COMM_EST for UD & RAW QP types.

This commit decrements qp->refcnt for those cases too and fixes another
potential bug by moving the sif_log line up before the qp->refcnt
decrement.

Orabug: 24288467

Signed-off-by: Francisco Triviño <francisco.trivino@oracle.com>
Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com>
Reviewed-by: Knut Omang <knut.omang@oracle.com>