ALSA: ca0106: Delete an error message for a failed memory allocation in...

ALSA: ca0106: Delete an error message for a failed memory allocation in snd_ca0106_pcm_open_capture_channel()

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>