i40e: fix trivial typo in naming of i40e_sync_filters_subtask

A comment incorrectly referred to i40e_vsi_sync_filters_subtask which
does not actually exist. Reference the correct function instead.

Change-ID: I6bd805c605741ffb6fe34377259bb0d597edfafd
Signed-off-by: NJacob Keller <jacob.e.keller@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -1211,12 +1211,12 @@ bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
 	 *    i40e_add_filter.
 	 *
 	 * 2) the only place where filters are actually removed is in
-	 *    i40e_vsi_sync_filters_subtask.
+	 *    i40e_sync_filters_subtask.
 	 *
 	 * Thus, we can simply use a boolean value, has_vlan_filters which we
 	 * will set to true when we add a VLAN filter in i40e_add_filter. Then
 	 * we have to perform the full search after deleting filters in
-	 * i40e_vsi_sync_filters_subtask, but we already have to search
+	 * i40e_sync_filters_subtask, but we already have to search
 	 * filters here and can perform the check at the same time. This
 	 * results in avoiding embedding a loop for VLAN mode inside another
 	 * loop over all the filters, and should maintain correctness as noted