KVM: nVMX: do not call nested_vmx_succeed() for consistency check VMExit

EFLAGS is set to a fixed value on VMExit, calling nested_vmx_succeed()
is unnecessary and wrong.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>