Write SQL query to solve given problem: How many matches of the Bundesliga division ended with an away victory in the 2021 season?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T1.Div) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T2.name = 'Bundesliga' AND T1.FTR = 'A' AND T1.season = 2021