RDMA/rtrs-srv: Free srv_mr iu only when always_invalidate is true

Since srv_mr->iu is allocated and used only when always_invalidate is
true, free it only when always_invalidate is true.

Fixes: 9cb8374 ("RDMA/rtrs: server: main functionality")
Signed-off-by: Md Haris Iqbal <[email protected]>
Signed-off-by: Jack Wang <[email protected]>
Signed-off-by: Grzegorz Prajsner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>

Author: hiqbal-ionos

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

@@ -551,7 +551,10 @@ static void unmap_cont_bufs(struct rtrs_srv_path *srv_path)
 		struct rtrs_srv_mr *srv_mr;
 
 		srv_mr = &srv_path->mrs[i];
-		rtrs_iu_free(srv_mr->iu, srv_path->s.dev->ib_dev, 1);
+
+		if (always_invalidate)
+			rtrs_iu_free(srv_mr->iu, srv_path->s.dev->ib_dev, 1);
+
 		ib_dereg_mr(srv_mr->mr);
 		ib_dma_unmap_sg(srv_path->s.dev->ib_dev, srv_mr->sgt.sgl,
 				srv_mr->sgt.nents, DMA_BIDIRECTIONAL);