Function remove_oem_ubi_volume was called before CI_UBIPART variable was defined.
Fixes: df1f6e1e18 (qualcommax: ipq807x: Remove OEM UBI volume before upgrade for Linksys MX devices)
Signed-off-by: Paweł Owoc <frut3k7@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/18090
Signed-off-by: Robert Marko <robimarko@gmail.com>