5045 use atomic_{inc,dec}_* instead of atomic_add_*

@@ -174,11 +174,11 @@
                     "Another thread running(conn: %p)", conn);
                 rdsv3_stats_inc(s_send_sem_contention);
                 ret = -ENOMEM;
                 goto out;
         }
-        atomic_add_32(&conn->c_senders, 1);
+        atomic_inc_32(&conn->c_senders);
 
         if (conn->c_trans->xmit_prepare)
                 conn->c_trans->xmit_prepare(conn);
 
         /*

@@ -565,20 +565,20 @@
 
         mutex_enter(&conn->c_lock);
 
         RDSV3_FOR_EACH_LIST_NODE_SAFE(rm, tmp, &conn->c_retrans, m_conn_item) {
                 if (rm->m_rdma_op == op) {
-                        atomic_add_32(&rm->m_refcount, 1);
+                        atomic_inc_32(&rm->m_refcount);
                         found = rm;
                         goto out;
                 }
         }
 
         RDSV3_FOR_EACH_LIST_NODE_SAFE(rm, tmp, &conn->c_send_queue,
             m_conn_item) {
                 if (rm->m_rdma_op == op) {
-                        atomic_add_32(&rm->m_refcount, 1);
+                        atomic_inc_32(&rm->m_refcount);
                         found = rm;
                         break;
                 }
         }