[SCSI] fix memory leak in scsi_report_lun_scan

This patch (as1333) fixes a bug in scsi_report_lun_scan().  If a
newly-allocated device can't be used, it should be deleted.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

drivers/scsi/scsi_scan.c

@@ -1339,8 +1339,10 @@ static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
 		sdev = scsi_alloc_sdev(starget, 0, NULL);
 		if (!sdev)
 			return 0;
-		if (scsi_device_get(sdev))
+		if (scsi_device_get(sdev)) {
+			__scsi_remove_device(sdev);
 			return 0;
+		}
 	}
 
 	sprintf(devname, "host %d channel %d id %d",