HID: input: fix assignment of .value

The value field is actually an array of .maxfield. We should assign the
correct number to the correct usage.

Not that we never encounter a device that requires this ATM, but better
have the proper code path.

Fixes: 2dc702c9 ("HID: input: use the Resolution Multiplier for
       high-resolution scrolling")
Cc: stable@vger.kernel.org  # v5.0+
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/hid-input.c

@@ -1580,7 +1580,7 @@ static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
 			if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
 				continue;
 
-			*report->field[i]->value = value;
+			report->field[i]->value[j] = value;
 			update_needed = true;
 		}
 	}