audit: inline audit_free to simplify the look of generic code

make the conditional a static inline instead of doing it in generic code.

Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/kernel/exit.c b/kernel/exit.c
index 94ed6e2..88dcbbc 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -964,8 +964,7 @@
 	acct_collect(code, group_dead);
 	if (group_dead)
 		tty_audit_exit();
-	if (unlikely(tsk->audit_context))
-		audit_free(tsk);
+	audit_free(tsk);
 
 	tsk->exit_code = code;
 	taskstats_exit(tsk, group_dead);