RDS: Move some variables around for consistency

Also, add a comment.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 8d22999..5ba5146 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -747,6 +747,7 @@
 	}
 
 	rm->atomic.op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME);
+	rm->atomic.op_active = 1;
 	rm->atomic.op_recverr = rs->rs_recverr;
 	rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1);
 
@@ -782,8 +783,6 @@
 	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;
-
 	return ret;
 err:
 	if (page)