igc: Fix an error handling path in 'igc_probe()'

If an error occurs after a 'pci_enable_pcie_error_reporting()' call, it
must be undone by a corresponding 'pci_disable_pcie_error_reporting()'
call, as already done in the remove function.

Fixes: c9a11c23 ("igc: Add netdev")
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Tested-by: NDvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Acked-by: NSasha Neftin <sasha.neftin@intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igc/igc_main.c

@@ -6056,6 +6056,7 @@ static int igc_probe(struct pci_dev *pdev,
 err_ioremap:
 	free_netdev(netdev);
 err_alloc_etherdev:
+	pci_disable_pcie_error_reporting(pdev);
 	pci_release_mem_regions(pdev);
 err_pci_reg:
 err_dma: