KVM: s390: Fix size of monitor-class number field

commit a36c5393 upstream.

The monitor-class number field is only 16 bits, so we have to use
a u16 pointer to access it.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

arch/s390/kvm/interrupt.c

@@ -247,7 +247,7 @@ static int __deliver_prog_irq(struct kvm_vcpu *vcpu,
 		break;
 	case PGM_MONITOR:
 		rc = put_guest_lc(vcpu, pgm_info->mon_class_nr,
-				  (u64 *)__LC_MON_CLASS_NR);
+				  (u16 *)__LC_MON_CLASS_NR);
 		rc |= put_guest_lc(vcpu, pgm_info->mon_code,
 				   (u64 *)__LC_MON_CODE);
 		break;