wifi: iwlwifi: mvm: fix a crash on 7265

Since IWL_FW_CMD_VER_UNKNOWN = 99, then my change to consider
cmd_ver >= 7 instead of cmd_ver = 7 included also firmwares that don't
advertise the command version at all. This made us send a command with a
bad size and because of that, the firmware hit a BAD_COMMAND immediately
after handling the REDUCE_TX_POWER_CMD command.

Fixes: 8f892e2 ("wifi: iwlwifi: mvm: support iwl_dev_tx_power_cmd_v8")
Signed-off-by: Emmanuel Grumbach <[email protected]>
Reviewed-by: Johannes Berg <[email protected]>
Signed-off-by: Miri Korenblit <[email protected]>
Link: https://msgid.link/20240512072733.eb20ff5050d3.Ie4fc6f5496cd296fd6ff20d15e98676f28a3cccd@changeid
Signed-off-by: Johannes Berg <[email protected]>

Author: egrumbach

drivers/net/wireless/intel/iwlwifi/mvm/fw.c

@@ -895,8 +895,8 @@ int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b)
 	int ret;
 	u16 len = 0;
 	u32 n_subbands;
-	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id,
-					   IWL_FW_CMD_VER_UNKNOWN);
+	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 3);
+
 	if (cmd_ver >= 7) {
 		len = sizeof(cmd.v7);
 		n_subbands = IWL_NUM_SUB_BANDS_V2;