[media] rtl2832.c: minor cleanup

The current formulation of the bw_params loop uses the counter j as an
index for the first dimension of the bw_params array which is later
incremented by the variable i. It is evaluated correctly only, because j
is initialized to 0 at the beginning of the loop. I think that
explicitly using the index 0 better reflects the intent of the
expression.
Signed-off-by: NHans-Frieder Vogt <hfvogt@gmx.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/rtl2832.c

@@ -589,7 +589,7 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe)
 		return -EINVAL;
 	}
 
-	for (j = 0; j < sizeof(bw_params[j]); j++) {
+	for (j = 0; j < sizeof(bw_params[0]); j++) {
 		ret = rtl2832_wr_regs(priv, 0x1c+j, 1, &bw_params[i][j], 1);
 		if (ret)
 			goto err;