add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mcb/mcb-core.c
..
..
@@ -71,8 +71,10 @@
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 	get_device(dev);
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 	ret = mdrv->probe(mdev, found_id);
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-	if (ret)
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+	if (ret) {
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 		module_put(carrier_mod);
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+		put_device(dev);
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+	}
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 	return ret;
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 }