net: emaclite: Fix MDIO bus unregister bug
Since 'has_mdio' flag is not used,sequence insmod->rmmod-> insmod leads to failure as MDIO unregister doesn't happen in .remove(). Fix it by checking MII bus pointer instead. Signed-off-by: NRadhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Signed-off-by: NMichal Simek <michal.simek@xilinx.com> Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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