b43: N-PHY: fix infinite-loop-typo

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_n.c

@@ -2964,7 +2964,7 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev,
 					(2 - i));
 		}
 
-		for (j = 0; i < 4; j++) {
+		for (j = 0; j < 4; j++) {
 			if (j < 3) {
 				cur_lna = lna[j];
 				cur_hpf1 = hpf1[j];