drm/xe/hwmon: Remove unwanted write permission for currN_label

Change umode of currN_label from 0644 to 0444 as write permission
not needed for label.

Signed-off-by: Karthik Poosa <[e-mail]>
Reviewed-by: Riana Tauro <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Rodrigo Vivi <[e-mail]>

drivers/gpu/drm/xe/xe_hwmon.c

···
 {
 	u32 uval;
 
+	/* hwmon sysfs attribute of current available only for package */
+	if (channel != CHANNEL_PKG)
+		return 0;
+
 	switch (attr) {
 	case hwmon_curr_crit:
-	case hwmon_curr_label:
-		if (channel == CHANNEL_PKG)
 			return (xe_hwmon_pcode_read_i1(hwmon->gt, &uval) ||
 				(uval & POWER_SETUP_I1_WATTS)) ? 0 : 0644;
+	case hwmon_curr_label:
+			return (xe_hwmon_pcode_read_i1(hwmon->gt, &uval) ||
+				(uval & POWER_SETUP_I1_WATTS)) ? 0 : 0444;
 		break;
 	default:
 		return 0;