RDMA/core: Delete duplicated and unreachable code

The ib_create_named_qp() is kernel verb and no kernel users exist that use
XRC_INI QP. Hence such QP path is not reachable. In addition, delete
duplicated assignments of QP attributes from the initialization structure.

Link: https://lore.kernel.org/r/1b4c0d1def5f8f6d26839e14d19da950cc4a0b05.1628014762.git.leonro@nvidia.comSigned-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/core/core_priv.h

@@ -341,6 +341,7 @@ _ib_create_qp(struct ib_device *dev, struct ib_pd *pd,
 	qp->srq = attr->srq;
 	qp->event_handler = attr->event_handler;
 	qp->port = attr->port_num;
+	qp->qp_context = attr->qp_context;
 
 	spin_lock_init(&qp->mr_lock);
 	INIT_LIST_HEAD(&qp->rdma_mrs);

drivers/infiniband/core/verbs.c

@@ -1257,28 +1257,14 @@ struct ib_qp *ib_create_named_qp(struct ib_pd *pd,
 		return xrc_qp;
 	}
 
-	qp->event_handler = qp_init_attr->event_handler;
-	qp->qp_context = qp_init_attr->qp_context;
-	if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
-		qp->recv_cq = NULL;
-		qp->srq = NULL;
-	} else {
-		qp->recv_cq = qp_init_attr->recv_cq;
-		if (qp_init_attr->recv_cq)
-			atomic_inc(&qp_init_attr->recv_cq->usecnt);
-		qp->srq = qp_init_attr->srq;
-		if (qp->srq)
-			atomic_inc(&qp_init_attr->srq->usecnt);
-	}
-
-	qp->send_cq = qp_init_attr->send_cq;
-	qp->xrcd    = NULL;
+	if (qp_init_attr->recv_cq)
+		atomic_inc(&qp_init_attr->recv_cq->usecnt);
+	if (qp->srq)
+		atomic_inc(&qp_init_attr->srq->usecnt);
 
 	atomic_inc(&pd->usecnt);
 	if (qp_init_attr->send_cq)
 		atomic_inc(&qp_init_attr->send_cq->usecnt);
-	if (qp_init_attr->rwq_ind_tbl)
-		atomic_inc(&qp->rwq_ind_tbl->usecnt);
 
 	if (qp_init_attr->cap.max_rdma_ctxs) {
 		ret = rdma_rw_init_mrs(qp, qp_init_attr);