wifi: iwlwifi: Free pages allocated when failing to build A-MSDU

When failing to prepare the data needed for A-MSDU transmission, the memory
allocated for the TSO management was not freed. Fix it.

Fixes: 7f5e3038 ("wifi: iwlwifi: map entire SKB when sending AMSDUs")
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250209143303.bc27fad9b3d5.Ibf43dd18fb652b1a59061204e081f11c9fa34a3f@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>