iwlwifi: calculate pointers from out_cmd instead of out_cmd->hdr

The out_cmd structure starts with a header, so there's no need to use
&out_cmd->hdr, out_cmd alone is enough.  We use this when calculating
other addresses and klocwork gets confused with that because it thinks
we are trying to access hdr (as an array) beyond its size.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c

@@ -838,14 +838,14 @@ static int iwl_pcie_gen2_enqueue_hcmd(struct iwl_trans *trans,
 
 	/* start the TFD with the minimum copy bytes */
 	tb0_size = min_t(int, copy_size, IWL_FIRST_TB_SIZE);
-	memcpy(&txq->first_tb_bufs[idx], &out_cmd->hdr, tb0_size);
+	memcpy(&txq->first_tb_bufs[idx], out_cmd, tb0_size);
 	iwl_pcie_gen2_set_tb(trans, tfd, iwl_pcie_get_first_tb_dma(txq, idx),
 			     tb0_size);
 
 	/* map first command fragment, if any remains */
 	if (copy_size > tb0_size) {
 		phys_addr = dma_map_single(trans->dev,
-					   ((u8 *)&out_cmd->hdr) + tb0_size,
+					   (u8 *)out_cmd + tb0_size,
 					   copy_size - tb0_size,
 					   DMA_TO_DEVICE);
 		if (dma_mapping_error(trans->dev, phys_addr)) {