ALSA: oxfw: fix return value in error path of isochronous resources reservation

BugLink: https://bugs.launchpad.net/bugs/1856869

commit 59a126a upstream.

Even if isochronous resources reservation fails, error code doesn't return
in pcm.hw_params callback.

Cc: <[email protected]> #5.3+
Fixes: 4f380d0 ("ALSA: oxfw: configure packet format in pcm.hw_params callback")
Signed-off-by: Takashi Sakamoto <[email protected]>
Link: https://lore.kernel.org/r/20191209151655.GA8090@workstation
Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Connor Kuehl <[email protected]>
Signed-off-by: Kleber Sacilotto de Souza <[email protected]>

Author: takaswie

sound/firewire/oxfw/oxfw-pcm.c

@@ -255,7 +255,7 @@ static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
 		mutex_unlock(&oxfw->mutex);
 	}
 
-	return 0;
+	return err;
 }
 
 static int pcm_capture_hw_free(struct snd_pcm_substream *substream)