s390/qeth: fine-tune MAC Address-related errnos

Return the correct errnos when .ndo_set_mac_address fails to set a new
MAC address.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2020-03-25 10:35:05 +01:00 • committed by David S. Miller
commit bdb0cc128b