Check The Outcomes
What might the outcomes for your viva be?
Maybe: No corrections, minor corrections, major corrections, fail?
Or: pass without amendments, minor amendments, resubmission, re-viva, no award?
It’s never simply “pass or fail”.
Different institutions have different formal terminology. They can also have different formal consequences for outcomes, like the amount of time given to complete corrections. Be sure of the possible outcomes at your institution.
You can reasonably expect to get minor corrections, because most people do. Be sure of what that means so you can plan that period after your viva.
You can also reasonably expect to find your university’s thesis examination regulations at my Regulations link page, because most people do – and I’m working on tracking down links to the missing institutions!