V4L/DVB (5526): Cx88-alsa.c: Use kzalloc

Replacing kmalloc/memset combination with kzalloc.

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c
index 6c22ec4..3956c25 100644
--- a/drivers/media/video/cx88/cx88-alsa.c
+++ b/drivers/media/video/cx88/cx88-alsa.c
@@ -414,11 +414,9 @@
 
 	dprintk(1,"Setting buffer\n");
 
-	buf = kmalloc(sizeof(*buf),GFP_KERNEL);
+	buf = kzalloc(sizeof(*buf),GFP_KERNEL);
 	if (NULL == buf)
 		return -ENOMEM;
-	memset(buf,0,sizeof(*buf));
-
 
 	buf->vb.memory = V4L2_MEMORY_MMAP;
 	buf->vb.width  = chip->period_size;