We know that "ret > 0" is true here.  These tests were left over from
commit 02afc27f ('direct-io: Handle O_(D)SYNC AIO') and aren't
needed any more.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>