V4L/DVB (10662): remove redundant memset after kzalloc

Hi there!

While having a look at the allocation of struct dvb_frontend in *_attach
functions, I found some cases calling memset after kzalloc. This is
redundant, and the attached patch removes these calls.
I also changed one case calling kmalloc and memset to kzalloc.

Regards
Matthias

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/frontends/cx24113.c b/drivers/media/dvb/frontends/cx24113.c
index f6e7b03..e4fd533 100644
--- a/drivers/media/dvb/frontends/cx24113.c
+++ b/drivers/media/dvb/frontends/cx24113.c
@@ -559,7 +559,7 @@
 		kzalloc(sizeof(struct cx24113_state), GFP_KERNEL);
 	int rc;
 	if (state == NULL) {
-		err("Unable to kmalloc\n");
+		err("Unable to kzalloc\n");
 		goto error;
 	}