[media] dvb-usb: Remove redundant NULL check before kfree

kfree on NULL pointer is a no-op.

Signed-off-by: Syam Sidhardhan <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/dvb-usb/cinergyT2-fe.c

···
 static void cinergyt2_fe_release(struct dvb_frontend *fe)
 {
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	if (state != NULL)
-		kfree(state);
+	kfree(state);
 }
 
 static struct dvb_frontend_ops cinergyt2_fe_ops;