RDS: Don't destroy the rdma id until after we're done using it

During connection resets, we are destroying the rdma id too soon. We can't
destroy it when it is still in use. So lets move rdma_destroy_id() after
we clear the rings.
Reviewed-by: NAjaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
Signed-off-by: NSantosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/rds/ib_cm.c

@@ -647,7 +647,6 @@ void rds_ib_conn_shutdown(struct rds_connection *conn)
 			ib_destroy_cq(ic->i_send_cq);
 		if (ic->i_recv_cq)
 			ib_destroy_cq(ic->i_recv_cq);
-		rdma_destroy_id(ic->i_cm_id);
 
 		/* then free the resources that ib callbacks use */
 		if (ic->i_send_hdrs)
@@ -673,6 +672,8 @@ void rds_ib_conn_shutdown(struct rds_connection *conn)
 		if (ic->i_recvs)
 			rds_ib_recv_clear_ring(ic);
 
+		rdma_destroy_id(ic->i_cm_id);
+
 		/*
 		 * Move connection back to the nodev list.
 		 */