Assalamu Alaykum. My question is followed; I was sleeping and woke up 10-12 minutes before sun rising. Then I quickly went to washroom and performed ablution and after that I saw it's 3 minutes left for sun rising. So, I offered 2 rakah Fard prayer first before sun starts to rise, then when the sun got risen fully, I offered 2 rakah Sunnah prayer. Have I done anything wrong or is there any other way to offer fajr prayer in this situation?