net: txgbe: Fix memleak in txgbe_calc_eeprom_checksum()

mainline inclusion
from mainline-v6.2-rc1
commit a068d33e
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8LOJU

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a068d33e542f5d5be2e5de3cf1122c4347d3e2af



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eeprom_ptrs should be freed before returned.

Fixes: 049fe536 ("net: txgbe: Add operations to interact with firmware")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Dapeng Yu <dapeng.yu@windriver.com>