igc: cleanup PTP module if probe fails

Make sure that the PTP module is cleaned up if the igc_probe() fails by
calling igc_ptp_stop() on exit.

Fixes: d89f884 ("igc: Add skeletal frame for Intel(R) 2.5G Ethernet Controller support")
Signed-off-by: Christopher S M Hall <christopher.s.hall@intel.com>
Reviewed-by: Corinna Vinschen <vinschen@redhat.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Mor Bar-Gabay <morx.bar.gabay@intel.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Author: christopher-s-hall

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

@@ -7231,6 +7231,7 @@ static int igc_probe(struct pci_dev *pdev,
 
 err_register:
 	igc_release_hw_control(adapter);
+	igc_ptp_stop(adapter);
 err_eeprom:
 	if (!igc_check_reset_block(hw))
 		igc_reset_phy(hw);