net: hns3: optimize code of hclge_init_kdump_kernel_config() function

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

This patch modifies one code logic in hclge_init_kdump_kernel_config()
function to reduce the indentation level, and it does not affect the
original process logic of the code.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Zhong Zhaohui <zhongzhaohui@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>