bnxt_re/lib: Populate vendor_err in the work completion

[ Upstream commit 5ac2b2f ]

In case of error completion, it is observed that vendor error
code is always set to zero. Update to populate vendor error along
with IB completions. Also, modified the log to display vendor error.

Fixes: f158e23 ("libbnxt_re: Allow apps to poll for flushed completions")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Nicolas Morey <nmorey@suse.com>

providers/bnxt_re/verbs.c

@@ -556,6 +556,7 @@ static uint8_t bnxt_re_poll_err_scqe(struct bnxt_re_qp *qp,
 	status = (le32toh(hdr->flg_st_typ_ph) >> BNXT_RE_BCQE_STATUS_SHIFT) &
 		  BNXT_RE_BCQE_STATUS_MASK;
 	ibvwc->status = bnxt_re_to_ibv_wc_status(status, true);
+	ibvwc->vendor_err = status;
 	ibvwc->wc_flags = 0;
 	ibvwc->wr_id = swrid->wrid;
 	ibvwc->qp_num = qp->qpid;
@@ -675,6 +676,7 @@ static int bnxt_re_poll_err_rcqe(struct bnxt_re_qp *qp, struct ibv_wc *ibvwc,
 		return 0;
 
 	ibvwc->status = bnxt_re_to_ibv_wc_status(status, false);
+	ibvwc->vendor_err = status;
 	ibvwc->qp_num = qp->qpid;
 	ibvwc->opcode = IBV_WC_RECV;
 	ibvwc->byte_len = 0;