HID: i2c-hid: Switch i2c_hid_parse() to goto style error handling

Switch i2c_hid_parse() to goto style error handling.

This is a preparation patch for removing the need for
I2C_HID_QUIRK_NO_IRQ_AFTER_RESET by making i2c-hid behave
more like Windows.

Note this changes the descriptor read error path to propagate
the actual i2c_hid_read_register() error code (which is always
negative) instead of hardcoding a -EIO return.
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/hid/i2c-hid/i2c-hid-core.c

@@ -773,23 +773,21 @@ static int i2c_hid_parse(struct hid_device *hid)
 					    rdesc, rsize);
 		if (ret) {
 			hid_err(hid, "reading report descriptor failed\n");
-			kfree(rdesc);
-			return -EIO;
+			goto out;
 		}
 	}
 
 	i2c_hid_dbg(ihid, "Report Descriptor: %*ph\n", rsize, rdesc);
 
 	ret = hid_parse_report(hid, rdesc, rsize);
+	if (ret)
+		dbg_hid("parsing report descriptor failed\n");
+
+out:
 	if (!use_override)
 		kfree(rdesc);
 
-	if (ret) {
-		dbg_hid("parsing report descriptor failed\n");
-		return ret;
-	}
-
-	return 0;
+	return ret;
 }
 
 static int i2c_hid_start(struct hid_device *hid)