uboot-phytec

arm: bootm-fdt.c: fix compiler warning

compiling U-Boot with bosch_mpcxxxxd_sd_defconfig
drops warning:

arch/arm/lib/bootm-fdt.c: In function ‘arch_fixup_fdt’:
arch/arm/lib/bootm-fdt.c:37:6: warning: unused variable ‘ret’ [-Wunused-variable]
  int ret = 0;
      ^~~

Fix it.

Signed-off-by: Heiko Schocher <hs@denx.de>