eeprom: ee1004: Add helper ee1004_cleanup

Factor out the cleanup code to a new helper ee1004_cleanup().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/9738cbc7-458d-276f-4012-66551f105d90@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>