ASoC: rt711: remove warnings

cppcheck complains, use separate loop variable for sink and source ports

sound/soc/codecs/rt711-sdw.c:382:4: style: Variable 'i' is reassigned
a value before the old one has been used. [redundantAssignment]
 i = 0;
   ^
sound/soc/codecs/rt711-sdw.c:371:4: note: i is assigned
  i++;
   ^
sound/soc/codecs/rt711-sdw.c:382:4: note: i is overwritten
 i = 0;
   ^

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Link: https://lore.kernel.org/r/20201111214318.150529-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt711-sdw.c

@@ -338,7 +338,8 @@ static int rt711_update_status(struct sdw_slave *slave,
 static int rt711_read_prop(struct sdw_slave *slave)
 {
 	struct sdw_slave_prop *prop = &slave->prop;
-	int nval, i;
+	int nval;
+	int i, j;
 	u32 bit;
 	unsigned long addr;
 	struct sdw_dpn_prop *dpn;
@@ -379,15 +380,15 @@ static int rt711_read_prop(struct sdw_slave *slave)
 	if (!prop->sink_dpn_prop)
 		return -ENOMEM;
 
-	i = 0;
+	j = 0;
 	dpn = prop->sink_dpn_prop;
 	addr = prop->sink_ports;
 	for_each_set_bit(bit, &addr, 32) {
-		dpn[i].num = bit;
-		dpn[i].type = SDW_DPN_FULL;
-		dpn[i].simple_ch_prep_sm = true;
-		dpn[i].ch_prep_timeout = 10;
-		i++;
+		dpn[j].num = bit;
+		dpn[j].type = SDW_DPN_FULL;
+		dpn[j].simple_ch_prep_sm = true;
+		dpn[j].ch_prep_timeout = 10;
+		j++;
 	}
 
 	/* set the timeout values */