[SCSI] simscsi: Free scsi host on error

If scsi_add_host returned an error, the host would never be freed.
We need to call scsi_host_put() if an error happens.
Signed-off-by: NMatthew Wilcox <matthew@wil.cx>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

arch/ia64/hp/sim/simscsi.c

@@ -373,8 +373,13 @@ simscsi_init(void)
 		return -ENOMEM;
 
 	error = scsi_add_host(host, NULL);
-	if (!error)
-		scsi_scan_host(host);
+	if (error)
+		goto free_host;
+	scsi_scan_host(host);
+	return 0;
+
+ free_host:
+	scsi_host_put(host);
 	return error;
 }