ALSA: hda/ca0132 - remove the unneeded result variable

Return the value dsp_allocate_ports() directly instead of storing it in
another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220922112846.236987-1-ye.xingchen@zte.com.cn


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