Here is the problem. The core of your request for asylum was, that you did not feel safe in your country and they have failed to protect you. With that said, by returning back to your country for whatever reason (regardless if you got cheap scholarship, found a cheaper medical car or if your mother was on a deathbed and your siblings were begging on the streets) is just showing that you do not feel that your life is threatened there, hence you do not need protection of Canada anymore.
What you did can easily lead (and most likely will) in the revocation of your PR status (when you will request for citizenship).
You might need a very good immigration lawyer. But even with that it is difficult to predict the outcome