You can never really fail any of the assessment stages, you can however need another visit to perform again (worst case scenario) or have to fix some errors (non-conformances).
Generally, during a stage 1 assessment you will have some errors than need to be corrected but if these are small fixes then we will just review these as part of your stage 2 assessment, there is not ordinarily a need to submit evidence of correction before the stage 2.
If the nature of the errors is larger then we may want some evidence supplied before we go ahead with the stage 2, maybe some procedure updates etc.
If we turn up on site and you have nothing in place then we are more likely going to need another stage 1 assessment.
So you never really fail, you just don't pass until you fix everything.