wifi: rtw89: fix rtw89_read_chip_ver() for RTL8852B and RTL8851B

The if statement is reversed so it will not record the chip version.
This was detected using Smatch:

    drivers/net/wireless/realtek/rtw89/core.c:3593 rtw89_read_chip_ver()
    error: uninitialized symbol 'val'.

Fixes: a6fb2bb8 ("wifi: rtw89: read version of analog hardware")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/e4d912a2-37f8-4068-8861-7b9494ae731b@kili.mountain

drivers/net/wireless/realtek/rtw89/core.c

@@ -3668,7 +3668,7 @@ static void rtw89_read_chip_ver(struct rtw89_dev *rtwdev)
 
 	if (chip->chip_id == RTL8852B || chip->chip_id == RTL8851B) {
 		ret = rtw89_mac_read_xtal_si(rtwdev, XTAL_SI_CV, &val);
-		if (!ret)
+		if (ret)
 			return;
 
 		rtwdev->hal.acv = u8_get_bits(val, XTAL_SI_ACV_MASK);