cxgb3: Removing unused return variable

Currently the ret variable is not used for anything other than
receive the value of the t3_adapter_error(), which will always be 0,
because the reset parameter is 0.
Signed-off-by: NBreno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/cxgb3/cxgb3_main.c

@@ -3006,12 +3006,11 @@ static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev,
 					     pci_channel_state_t state)
 {
 	struct adapter *adapter = pci_get_drvdata(pdev);
-	int ret;
 
 	if (state == pci_channel_io_perm_failure)
 		return PCI_ERS_RESULT_DISCONNECT;
 
-	ret = t3_adapter_error(adapter, 0, 0);
+	t3_adapter_error(adapter, 0, 0);
 
 	/* Request a slot reset. */
 	return PCI_ERS_RESULT_NEED_RESET;