scsi: virtio_scsi: Add validation for residual bytes from response

This ensures that the residual bytes in response (might come from an
untrusted device) will not exceed the data buffer length.

Link: https://lore.kernel.org/r/20210615105218.214-1-xieyongji@bytedance.com


Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>