While I can't comment on that university specifically, usually there are provisions to retake exams in the summer and if you fail those, to resit the year. However typically you are limited to taking the exam for a given module a maximum of three times; so if you failed the retake year it's very likely they would require you to withdraw from the course.
In the first instance however you should speak to the administrative/student support staff at your university and if applicable, your department/faculty. You should also speak with your personal tutor or equivalent, who can put you in touch with the aforementioned staff if you are unsure of how to get into contact with them.