Can you travel between writing your exam and taking oath?. When are existing (non-canada) passports collected?
If you already have oath date and your travel - departure and return - is before the scheduled oath date, then you are okay
If your status says Decision Made but you don't have oath date and must travel then use WEB Form to inform IRCC and have them schedule the oath after your return date.
IRCC does not collect "non-Canada" passport but they will collect your PR Card during oath ceremony.