Does God never make the reward of good doers who have fear for God to be lost in this world?

Verses 56-57 of Chapter 12:

Thus did We give full authority to Yusuf in the land, to take possession therein, when or where he likes. We bestow of Our mercy on whom We will, and We make not to be lost the reward of the good doers. And verily, the reward of the Hereafter is better for those who believed and had Taqwa (fear for God). 

Verses 89-90 of Chapter 12:

He said: "Do you know what you did with Yusuf and his brother, when you were ignorant''. They said: "Are you indeed Yusuf'' He said: "I am Yusuf , and this is my brother. Allah has indeed been gracious to us. He who has Taqwa (fear for God), and is patient, then surely, Allah makes not the reward of the good doers to be lost.''