Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
Fixes: b7370112f519 ("lpc32xx: Added ethernet driver") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: David S. Miller <davem@davemloft.net>