ALSA: atmel - Fix the return value in error path

In the commit c0763e687d0283d0db507813ca4462aa4073c5b5
    ALSA: snd-atmel-abdac: test wrong variable
the return value via PTR_ERR() had to be fixed as well.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 file changed