[PATCH] HID: lg: fix noderef.cocci warnings

[kbuild test robot]

drivers/hid/hid-lg.c:780:47-53: ERROR: application of sizeof to pointer

 sizeof when applied to a pointer typed expression gives the size of
 the pointer

Generated by: scripts/coccinelle/misc/noderef.cocci

CC: Benjamin Tissoires <benjamin.tissoi...@redhat.com>
Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---

 hid-lg.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -777,8 +777,10 @@ static int lg_probe(struct hid_device *h
                        buf[1] = 0xB2;
                        get_random_bytes(&buf[2], 2);
 
-                       ret = hid_hw_raw_request(hdev, buf[0], buf, sizeof(buf),
-                                       HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
+                       ret = hid_hw_raw_request(hdev, buf[0], buf,
+                                                sizeof(*buf),
+                                                HID_FEATURE_REPORT,
+                                                HID_REQ_SET_REPORT);
                }
                kfree(buf);
        }