RDS: Base init_depth and responder_resources on hw values

Instead of using a constant for initiator_depth and
responder_resources, read the per-QP values when the
device is enumerated, and then use these values when creating
the connection.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index a7019df..abbc297 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -745,7 +745,6 @@
 		rm->atomic.op_swap_add = args->fadd.add;
 	}
 
-	rm->m_rdma_cookie = args->cookie;
 	rm->atomic.op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME);
 	rm->atomic.op_recverr = rs->rs_recverr;
 	rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1);
@@ -779,7 +778,7 @@
 		rm->atomic.op_notifier->n_status = RDS_RDMA_SUCCESS;
 	}
 
-	rm->atomic.op_rkey = rds_rdma_cookie_key(rm->m_rdma_cookie);
+	rm->atomic.op_rkey = rds_rdma_cookie_key(args->cookie);
 	rm->atomic.op_remote_addr = args->remote_addr + rds_rdma_cookie_offset(args->cookie);
 
 	rm->atomic.op_active = 1;