ALSA: line6: fix check on snd_card_register

The fix checks if snd_card_register() fails, and if so logs the error
via dev_err() consistent with other patches.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 file changed