[IRDA]: irda-usb, unregister netdev when patch upload fails
In the STIR421x case, when the firmware upload fails, we need to unregister_netdev. Otherwise we hit a BUG on free_netdev(), if sysfs is enabled. Signed-off-by: NSamuel Ortiz <samuel.ortiz@nokia.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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