cmd: fatload: command doesn't update $filesize after next calls

[Johannes Krottmayer]

Hello,

I'm figured out an issue with the command 'fatload':

Here the file list with the command 'fatls':

---
StarFive # fatls mmc 1:3
  3048997   firmware.itb
   149225   u-boot-spl.bin.normal.out
     3184   depp.efi
    12318   hello.efi
    44122   jh7110-starfive-visionfive-2-v1.3b-8G.dtb

5 file(s), 0 dir(s)
---

As you can see the files have different sizes.

First invoke of the command 'fatload' saves the correct size in
the variable $filesize:

---
StarFive # fatload mmc 1:3 $loadaddr u-boot-spl.bin.normal.out $filesize
149225 bytes read in 9 ms (15.8 MiB/s)
StarFive # echo $filesize
246e9
---

When trying to load a new file with 'fatload', the variable $filesize
still contains the old size from the previous call:

---
StarFive # fatload mmc 1:3 $loadaddr firmware.itb $filesize
149225 bytes read in 9 ms (15.8 MiB/s)
StarFive # echo $filesize
246e9
StarFive #
---

Has somebody noticed the same issue? Noticed in U-Boot version at least

v2025.10 and v2026.05.

Kind regards,

Johannes K.
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