media: dvb-frontends: delete jump targets

* Return directly after a call of the function "kzalloc" failed
  at the beginning.

* Move a bit of exception handling code into an if branch.

* Delete jump targets which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>

drivers/media/dvb-frontends/cx24113.c

@@ -556,7 +556,7 @@ struct dvb_frontend *cx24113_attach(struct dvb_frontend *fe,
 	int rc;
 
 	if (!state)
-		goto error;
+		return NULL;
 
 	/* setup the state */
 	state->config = config;