bnxt_en: fix module unload sequence

JIRA: https://issues.redhat.com/browse/RHEL-76568

commit 927069d
Author: Vadim Fedorenko <vadfed@meta.com>
Date:   Wed Apr 30 10:03:43 2025 -0700

    bnxt_en: fix module unload sequence

    Recent updates to the PTP part of bnxt changed the way PTP FIFO is
    cleared, skbs waiting for TX timestamps are now cleared during
    ndo_close() call. To do clearing procedure, the ptp structure must
    exist and point to a valid address. Module destroy sequence had ptp
    clear code running before netdev close causing invalid memory access and
    kernel crash. Change the sequence to destroy ptp structure after device
    close.

    Fixes: 8f7ae5a ("bnxt_en: improve TX timestamping FIFO configuration")
    Reported-by: Taehee Yoo <ap420073@gmail.com>
    Closes: https://lore.kernel.org/netdev/CAMArcTWDe2cd41=ub=zzvYifaYcYv-N-csxfqxUvejy_L0D6UQ@mail.gmail.com/
    Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
    Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
    Reviewed-by: Michael Chan <michael.chan@broadcom.com>
    Tested-by: Taehee Yoo <ap420073@gmail.com>
    Link: https://patch.msgid.link/20250430170343.759126-1-vadfed@meta.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Shruti Parab <shruti.parab@broadcom.com>

Author: Shruti Parab

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -15865,8 +15865,8 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 
 	bnxt_rdma_aux_device_del(bp);
 
-	bnxt_ptp_clear(bp);
 	unregister_netdev(dev);
+	bnxt_ptp_clear(bp);
 
 	bnxt_rdma_aux_device_uninit(bp);