x86: vmx: Remove bogus GUEST_RIP update from interrupt test

When we get an EXTINT exit, the guest RIP already points to the
instruction after the one that sent it into HLT state. Moving
the RIP based on stale insn_len caused spurious L2 crashes.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <554729D3.5060005@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

x86/vmx_tests.c

@@ -1297,10 +1297,8 @@ static int interrupt_exit_handler(void)
 			asm volatile ("nop");
 			irq_disable();
 		}
-		if (vmx_get_test_stage() >= 2) {
+		if (vmx_get_test_stage() >= 2)
 			vmcs_write(GUEST_ACTV_STATE, ACTV_ACTIVE);
-			vmcs_write(GUEST_RIP, guest_rip + insn_len);
-		}
 		return VMX_TEST_RESUME;
 	default:
 		printf("Unknown exit reason, %d\n", reason);