RDMA/hns: Fix misplaced call to hns_roce_cleanup_hem_table

The mtt_table is cleaned up during the err_unmap_cqe label, it is a
mistake to duplicate the cleanup during the later unwind labels.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/hns/hns_roce_main.c

@@ -636,7 +636,6 @@ err_unmap_dmpt:
 	hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);
 
 err_unmap_mtt:
-	hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table);
 	if (hns_roce_check_whether_mhop(hr_dev, HEM_TYPE_CQE))
 		hns_roce_cleanup_hem_table(hr_dev,
 					   &hr_dev->mr_table.mtt_cqe_table);