net: dsa: mv88e6xxx: Fix unconditional irq freeing

Trying to remove an IRQ domain that was not created results in an
Opps. Add the necessary checks that the irqs were created before
freeing them.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2016-11-20 20:14:15 +01:00 • committed by David S. Miller
commit 46712644d6