wifi: iwlmei: send HOST_GOES_DOWN message even if wiamt is disabled

The HOST_GOES_DOWN message should be sent even if wiamt is disabled.
Otherwise wiamt may still use the shared memory (e.g. if enabled
later) while it's no longer valid.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230822103048.2baad50eb1c3.If7b7c1dc2d6bfc6bacf7f6c72972f19714d9d973@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mei/main.c

@@ -2070,9 +2070,7 @@ static void iwl_mei_remove(struct mei_cl_device *cldev)
 
 	mutex_lock(&iwl_mei_mutex);
 
-	if (mei->amt_enabled) {
-		/*
-		 * Tell CSME that we are going down so that it won't access the
+	/* Tell CSME that we are going down so that it won't access the
 	 * memory anymore, make sure this message goes through immediately.
 	 */
 	mei->csa_throttled = false;
@@ -2086,8 +2084,7 @@ static void iwl_mei_remove(struct mei_cl_device *cldev)
 		msleep(20);
 	}
 
-		/*
-		 * If we couldn't make sure that CSME saw the HOST_GOES_DOWN
+	/* If we couldn't make sure that CSME saw the HOST_GOES_DOWN
 	 * message, it means that it will probably keep reading memory
 	 * that we are going to unmap and free, expect IOMMU error
 	 * messages.
@@ -2095,7 +2092,6 @@ static void iwl_mei_remove(struct mei_cl_device *cldev)
 	if (i == SEND_SAP_MAX_WAIT_ITERATION)
 		dev_err(&mei->cldev->dev,
 			"Couldn't get ACK from CSME on HOST_GOES_DOWN message\n");
-	}
 
 	mutex_unlock(&iwl_mei_mutex);