RDMA/hns: Initial value assignment cleanup for RoCE Bonding variables

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6Z4E9



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This patch assigns initial value when variable is defined in
HNS RoCE Bonding driver, instead of doing so on a new line.

Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>