I need to always logout of my application when my test fails or an exception occurs. How should i do it?

I have a test case as below:

@Test
public void checkSomething()
{
//line1
//line2
//line3
//line4[Exception occurs here]
//line5
//line6
//line7 homepage.Logout();
}

Now if an exception occurs in line4 for example, then my application will never logout[line7]. This will cause my further test cases to fail since they will not be able to login since user session will be active. How do i make it possible that logout always happen when a test fails prematurely?

I tried putting the logout logic in @AfterMethod. It works fine but is that the best practice to write test code in a configuration method like @AfterMethod?