RDMA/hns: Fix inaccurate error label name in init instance

This patch fixes inaccurate error label name in init instance.

Fixes: 70f92521

 ("RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20230804012711.808069-4-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>