KVM: PPC: fix couple of memory leaks in MPIC/XICS devices

XICS failed to free xics structure on error path. MPIC destroy handler
forgot to delete kvm_device structure.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c
index 2861ae9..efbd996 100644
--- a/arch/powerpc/kvm/mpic.c
+++ b/arch/powerpc/kvm/mpic.c
@@ -1635,6 +1635,7 @@
 
 	dev->kvm->arch.mpic = NULL;
 	kfree(opp);
+	kfree(dev);
 }
 
 static int mpic_set_default_irq_routing(struct openpic *opp)