hwmon: (it87) Check for a valid chip before using force_id

Check there is a chip before using force_id parameter as there
is no value in registering a non-existent chip
Signed-off-by: Ahmad Khalifa <ahmad@khalifa.ws>
Link: https://lore.kernel.org/r/20221004210100.540120-3-ahmad@khalifa.wsSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/it87.c

@@ -2401,7 +2401,13 @@ static int __init it87_find(int sioaddr, unsigned short *address,
 		return err;
 
 	err = -ENODEV;
-	chip_type = force_id ? force_id : superio_inw(sioaddr, DEVID);
+	chip_type = superio_inw(sioaddr, DEVID);
+	/* check first for a valid chip before forcing chip id */
+	if (chip_type == 0xffff)
+		goto exit;
+
+	if (force_id)
+		chip_type = force_id;
 
 	switch (chip_type) {
 	case IT8705F_DEVID: