block: call blk_get_queue earlier in __device_add_disk

hulk inclusion
category: bugfix
bugzilla: 188733

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When adding a disk, first obtain the reference count of the request_queue,
and release the reference count when error handling, which will make it
easier for the driver to add error handling.

Signed-off-by: Zhong Jinghua <zhongjinghua@huawei.com>
Signed-off-by: Li Nan <linan122@huawei.com>