!426 scsi:sssraid: Introduce map_queue in sssraid module & code quality reinforcement content

Merge Pull Request from: @steven-song3 
 
Introduce map_queue in sssraid module for performance enhancement.

Quality reinforcement content:

1. use bsg_remove_queue replace sssraid_remove_bsg to
address insufficient resource release.
2. set pdev private data to NULL when probe process
failed to prevent accessing null pointers in next
possible exit process.
3. modifications for code review recommendations. 
 
Link:https://gitee.com/openeuler/kernel/pulls/426

 

Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>