[SCSI] fix double free of scsi request queue

Current scsi scanning code appears to have a use after free
bug is a LLDD's slave_alloc fails. Remove the redundant
scsi_free_queue.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/scsi_scan.c

@@ -279,7 +279,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
 
 out_device_destroy:
 	transport_destroy_device(&sdev->sdev_gendev);
-	scsi_free_queue(sdev->request_queue);
 	put_device(&sdev->sdev_gendev);
 out:
 	if (display_failure_msg)