KVM: emulate: simplify BitOp handling

Memory is always the destination for BitOp instructions.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/emulate.c

@@ -4079,7 +4079,7 @@ static int decode_operand(struct x86_emulate_ctxt *ctxt, struct operand *op,
 	mem_common:
 		*op = ctxt->memop;
 		ctxt->memopp = op;
-		if ((ctxt->d & BitOp) && op == &ctxt->dst)
+		if (ctxt->d & BitOp)
 			fetch_bit_operand(ctxt);
 		op->orig_val = op->val;
 		break;