RDMA/hns: Fix default congest type

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5XJ01



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Add default algorithm processing.

Fixes: f91696f2 ("RDMA/hns: Support congestion control type selection according to the FW")
Signed-off-by: zhengfeng luo <luozhengfeng@h-partners.com>
Reviewed-by: Yangyang Li <liyangyang20@huawei.com>
Reviewed-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>