ALSA: oxfw: fix a condition and return code in start_stream()
ALSA: oxfw: fix a condition and return code in start_stream()

The amdtp_stream_wait_callback() doesn't return minus value and
the return code is not for error code.

This commit fixes with a propper condition and an error code.

Fixes: f3699e2c7745 ('ALSA: oxfw: Change the way to start stream')
Reported-by: Dan Carpenter <ff341aa343d564f9e53e9dcb6996be8c04859a66@oracle.com>
Signed-off-by: Takashi Sakamoto <d5ec7d0cd8074757a1f5eb708bc105c3065a65ea@sakamocchi.jp>
Cc: <4fbacc2fa0ffdbb11bf1ad6925b886ebd08dd15f@vger.kernel.org> # 3.19+
Signed-off-by: Takashi Iwai <4596b3305151c7ee743192a95d394341e3d3b644@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs