scsi: storvsc: Return DID_ERROR for invalid commands

ILLEGAL_COMMAND is a sense code, not a driver byte.

Link: https://lore.kernel.org/r/20210113090500.129644-33-hare@suse.de


Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>