net: ena: remove devm from ethtool

There's no need for devm bloat here. In addition, these are freed right
before the function exits.

Also swapped kcalloc order for consistency.

Signed-off-by: Rosen Penev <[e-mail]>
Reviewed-by: Shay Agroskin <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/amazon/ena/ena_ethtool.c

···
 		return;
 	}
 
-	strings_buf = devm_kcalloc(&adapter->pdev->dev,
-				   ETH_GSTRING_LEN, strings_num,
-				   GFP_ATOMIC);
+	strings_buf = kcalloc(strings_num, ETH_GSTRING_LEN, GFP_ATOMIC);
 	if (!strings_buf) {
 		netif_err(adapter, drv, netdev,
 			  "Failed to allocate strings_buf\n");
 		return;
 	}
 
-	data_buf = devm_kcalloc(&adapter->pdev->dev,
-				strings_num, sizeof(u64),
-				GFP_ATOMIC);
+	data_buf = kcalloc(strings_num, sizeof(u64), GFP_ATOMIC);
 	if (!data_buf) {
 		netif_err(adapter, drv, netdev,
 			  "Failed to allocate data buf\n");
-		devm_kfree(&adapter->pdev->dev, strings_buf);
+		kfree(strings_buf);
 		return;
 	}
 
···
 				  strings_buf + i * ETH_GSTRING_LEN,
 				  data_buf[i]);
 
-	devm_kfree(&adapter->pdev->dev, strings_buf);
-	devm_kfree(&adapter->pdev->dev, data_buf);
+	kfree(strings_buf);
+	kfree(data_buf);
 }
 
 void ena_dump_stats_to_buf(struct ena_adapter *adapter, u8 *buf)