x86/svm: Fix valid condition in svm_get_pending_event()

Fixes: 9864841914 ("x86/vm_event: add support for VM_EVENT_REASON_INTERRUPT")
Signed-off-by: Jinoh Kang <jinoh.kang.kr@gmail.com>

xen/arch/x86/hvm/svm/svm.c

@@ -2415,7 +2415,7 @@ static bool cf_check svm_get_pending_event(
 {
     const struct vmcb_struct *vmcb = v->arch.hvm.svm.vmcb;
 
-    if ( vmcb->event_inj.v )
+    if ( !vmcb->event_inj.v )
         return false;
 
     info->vector = vmcb->event_inj.vector;