KVM: s390: Use helper function to set CC in SIGP handler

We've got a helper function for setting the condition code now,
so let's use it in the SIGP handler, too.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

arch/s390/kvm/sigp.c

@@ -435,7 +435,6 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
 	if (rc < 0)
 		return rc;
 
-	vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
-	vcpu->arch.sie_block->gpsw.mask |= (rc & 3ul) << 44;
+	kvm_s390_set_psw_cc(vcpu, rc);
 	return 0;
 }