[ALSA] Don't NULL check vfree argument in pdaudiocf_pcm.c

Modules: PDAudioCF driver

Don't check pointers passed to vfree for null in pdaudiocf_pcm.c
Signed-off-by: NJesper Juhl <Jesper.Juhl@Gmail.Com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c

@@ -66,10 +66,9 @@ static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t s
 static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
 {
 	struct snd_pcm_runtime *runtime = subs->runtime;
-	if (runtime->dma_area) {
-		vfree(runtime->dma_area);
-		runtime->dma_area = NULL;
-	}
+
+	vfree(runtime->dma_area);
+	runtime->dma_area = NULL;
 	return 0;
 }