uboot-imx

ARM: socfpga: stratix10: Return valid error code from FPGA driver

This patch prevent the Stratix 10 FPGA driver incorrectly return the
transaction ID as the mailbox error code. It should always return the
actual mailbox error code from SDM firmware.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>