Merge branch 'ezchip-fixes'

Merge branch 'ezchip-fixes'

Pavel Skripkin says:

====================
net: ethernat: ezchip: bug fixing and code improvments

While manual code reviewing, I found some error in ezchip driver.
Two of them looks very dangerous:
  1. use-after-free in nps_enet_remove
      Accessing netdev private data after free_netdev()

  2. wrong error handling of platform_get_irq()
      It can cause passing negative irq to request_irq()

Also, in 2nd patch I removed redundant check to increase execution
speed and make code more straightforward.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>