net: stmmac: Correctly assing MAX MTU in XGMAC cores case

Maximum MTU for XGMAC cores is 16k thus the check for presence of XGMAC
shall be done first in order to assign correct value.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-09-04 15:17:03 +02:00 • committed by David S. Miller
commit 56bcd59122