drivers/scsi/NCR_D700.c: fix a NULL dereference

@@ -206,31 +206,31 @@ NCR_D700_probe_one(struct NCR_D700_priva
 	if (!host) {
 		ret = -ENOMEM;
 		goto detect_failed;
 	}
 
 	p->hosts[siop] = host;
 	/* FIXME: read this from SUS */
 	host->this_id = id_array[slot * 2 + siop];
 	host->irq = irq;
 	host->base = region;
 	scsi_scan_host(host);
 
 	return 0;
 
  detect_failed:
-	release_region(host->base, 64);
+	release_region(region, 64);
  region_failed:
 	kfree(hostdata);
 
 	return ret;
 }
 
 static int
 NCR_D700_intr(int irq, void *data, struct pt_regs *regs)
 {
 	struct NCR_D700_private *p = (struct NCR_D700_private *)data;
 	int i, found = 0;
 
 	for (i = 0; i < 2; i++)
 		if (p->hosts[i] &&
 		    NCR_700_intr(irq, p->hosts[i], regs) == IRQ_HANDLED)