RDMA/hns: Fix inconsistent warning

This patch fixes smatch inconsistent warning as below:
drivers/infiniband/hw/hns/hns_roce_hem.h:136 hns_roce_hem_first() warn: inconsistent indenting
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NShaobo Xu <xushaobo2@huawei.com>
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>