IF statement for DATEDIFF to handle an error

I'm calculating the number of DaysToCLose for a sales process. I have a CreatedDate and a ClosedDate to work with. My DAX is this: DaysToClose = DATEDIFF(Opportunities[CreatedDate],Opportunities[ClosedDate],DAY)

Sometimes the CreatedDate is after the CloseDate because of that's how sales works sometimes. When this happens I get and error in my column calculation: "In DATEDIFF function, the start date cannot be greater than the end date"

I need to create a solution to handle this error. I thought an IF statement could do it, but I don't know how to detect for the greater start date. When this error occurs DaysToClose =0. 

Thanks,

Jeff