[U-Boot] fdt: fix get_next_memory_node()

[Tom Rini <trini@konsulko.com>]

On Sun, Sep 09, 2018 at 04:30:11PM +0200, Marek Vasut wrote:

> The get_next_memory_node() always sets mem to -1 , which is incorrect,
> because then every iteration of memory bank parsing will start from the
> first memory bank instead of the previous one.
> 
> On systems with 1 memory bank defined in DT and CONFIG_NR_DRAM_BANKS=4 ,
> like ie. r8a77965-salvator-x , this will result in U-Boot incorrectly
> reporting four identical memory banks with the same memory configuration.
> 
> Fix this by setting mem to startoffset value, which restores the behavior
> before the fixed patch was applied.
> 
> Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
> Cc: Jens Wiklander <jens.wiklander@linaro.org>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Tom Rini <trini@konsulko.com>
> Fixes: 452bc121027d ("fdt: fix fdtdec_setup_memory_banksize()")
> Tested-by: Michal Simek <michal.simek@xilinx.com> [on ZynqMP}

Applied to u-boot/master, thanks!

-- 
Tom
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