nfp: move mutex init out of net code

Move mutex init to main file close to structure allocation.
This will allow mutex to be taken before net code runs (e.g.
from devlink callbacks).  While at it remember to destroy
the mutex.
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_main.c

@@ -41,6 +41,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/pci.h>
 #include <linux/firmware.h>
 #include <linux/vermagic.h>
@@ -342,6 +343,7 @@ static int nfp_pci_probe(struct pci_dev *pdev,
 	}
 	INIT_LIST_HEAD(&pf->vnics);
 	INIT_LIST_HEAD(&pf->ports);
+	mutex_init(&pf->lock);
 	pci_set_drvdata(pdev, pf);
 	pf->pdev = pdev;
 
@@ -380,6 +382,7 @@ static int nfp_pci_probe(struct pci_dev *pdev,
 	nfp_cpp_free(pf->cpp);
 err_disable_msix:
 	pci_set_drvdata(pdev, NULL);
+	mutex_destroy(&pf->lock);
 	kfree(pf);
 err_rel_regions:
 	pci_release_regions(pdev);
@@ -404,6 +407,7 @@ static void nfp_pci_remove(struct pci_dev *pdev)
 	nfp_cpp_free(pf->cpp);
 
 	kfree(pf->eth_tbl);
+	mutex_destroy(&pf->lock);
 	kfree(pf);
 	pci_release_regions(pdev);
 	pci_disable_device(pdev);

drivers/net/ethernet/netronome/nfp/nfp_net_main.c

@@ -641,7 +641,6 @@ int nfp_net_pci_probe(struct nfp_pf *pf)
 	int err;
 
 	INIT_WORK(&pf->port_refresh_work, nfp_net_refresh_vnics);
-	mutex_init(&pf->lock);
 
 	/* Verify that the board has completed initialization */
 	if (!nfp_is_ready(pf->cpp)) {