iio: proximity: hx9023s: fix assignment order for __counted_by

commit 585b90c upstream.

Initialize fw_size before copying firmware data into the flexible
array member to match the __counted_by() annotation. This fixes the
incorrect assignment order that triggers runtime safety checks.

Fixes: e9ed97b ("iio: proximity: hx9023s: Added firmware file parsing functionality")
Signed-off-by: Yasin Lee <yasin.lee.x@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: yasinleex

drivers/iio/proximity/hx9023s.c

@@ -1034,9 +1034,8 @@ static int hx9023s_send_cfg(const struct firmware *fw, struct hx9023s_data *data
 	if (!bin)
 		return -ENOMEM;
 
-	memcpy(bin->data, fw->data, fw->size);
-
 	bin->fw_size = fw->size;
+	memcpy(bin->data, fw->data, bin->fw_size);
 	bin->fw_ver = bin->data[FW_VER_OFFSET];
 	bin->reg_count = get_unaligned_le16(bin->data + FW_REG_CNT_OFFSET);