From where you are getting salary is not a matter, for what you are getting salary is to be considered for halal/haram.
Allah has cursed wine and has cursed the one who produces it, the one
for whom it is produced, the one who drinks it, the one who serves it,
the one who carries it, the one for whom it is carried, the one who
sells it, the one who earns from the sale of it, the one who buys it,
and the one for whom it is bought- Tirmidhi
From the above mentioned hadith, if your security supervising also includes the bar area then surely, it's haram (sad to say). If not(ie, you have no contact with the bar), it would be safe. In the hadith,it clearly says that
one who earns from the sale of wine, so if you have no part in selling the wine it won't be a problem. Mixing of money won't affect that. You are getting salary for the security supervising of golf only.
As I already mentioned, it is better to search for job somewhere to avoid confusion.
Allah knows the best.