scsi: sg: add sg_remove_request in sg_common_write

hulk inclusion
category: bugfix
bugzilla: 34234
CVE: NA

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If the dxfer_len is greater than 256M then the request is invalid,
it should call sg_remove_request in sg_common_write.

Fixes: f930c704 ("scsi: sg: only check for dxfer_len greater than 256M")
Signed-off-by: Li Bin <huawei.libin@huawei.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>