Merge branch 'pci_set_drvdata'

Jingoo Han syas:

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ethernet: remove unnecessary pci_set_drvdata() part 4

Since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound),
the driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
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Signed-off-by: David S. Miller <davem@davemloft.net>