RDMA/rtrs: server: Use already dereferenced rtrs_sess structure

The rtrs_sess structure has already been extracted above from the
rtrs_srv_sess structure. Use that to avoid redundant dereferencing.

Fixes: 9cb8374804 ("RDMA/rtrs: server: main functionality")
Link: https://lore.kernel.org/r/20200522082833.1480551-1-haris.phnx@gmail.com
Signed-off-by: Md Haris Iqbal <haris.phnx@gmail.com>
Acked-by: Danil Kipnis <danil.kipnis@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/ulp/rtrs/rtrs-srv.c

@@ -1822,13 +1822,13 @@ static int rtrs_rdma_connect(struct rdma_cm_id *cm_id,
 		/*
 		 * Sanity checks
 		 */
-		if (con_num != sess->s.con_num || cid >= sess->s.con_num) {
+		if (con_num != s->con_num || cid >= s->con_num) {
 			rtrs_err(s, "Incorrect request: %d, %d\n",
 				  cid, con_num);
 			mutex_unlock(&srv->paths_mutex);
 			goto reject_w_econnreset;
 		}
-		if (sess->s.con[cid]) {
+		if (s->con[cid]) {
 			rtrs_err(s, "Connection already exists: %d\n",
 				  cid);
 			mutex_unlock(&srv->paths_mutex);