KVM: x86: clean up a return

Returning a literal X86EMUL_CONTINUE is slightly clearer than returning
rc.

Signed-off-by: Dan Carpenter <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sean Christopherson <[email protected]>

Author: Dan Carpenter

arch/x86/kvm/x86.c

@@ -8021,7 +8021,7 @@ static int emulator_read_write(struct x86_emulate_ctxt *ctxt,
 		return rc;
 
 	if (!vcpu->mmio_nr_fragments)
-		return rc;
+		return X86EMUL_CONTINUE;
 
 	gpa = vcpu->mmio_fragments[0].gpa;