net/mlx5: E-Switch, unwind only newly loaded representor types

net/mlx5: E-Switch, unwind only newly loaded representor types

__esw_offloads_load_rep() may return success without invoking the
representor load callback when the representor type is already loaded.

On a later load failure, mlx5_esw_offloads_rep_load() unconditionally
unloaded all previously iterated representor types. This could unload
representor types that were already loaded before this load attempt.

Track which representor types were actually loaded by the current call and
unwind only those on error. Also restore the representor state back to
REP_REGISTERED when the load callback itself fails.

Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260503202726.266415-7-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>