IBM-EMAC: Deletion of unnecessary checks before the function call "of_dev_put"

The of_dev_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/emac/core.c

@@ -2323,15 +2323,10 @@ static int emac_check_deps(struct emac_instance *dev,
 
 static void emac_put_deps(struct emac_instance *dev)
 {
-	if (dev->mal_dev)
 	of_dev_put(dev->mal_dev);
-	if (dev->zmii_dev)
 	of_dev_put(dev->zmii_dev);
-	if (dev->rgmii_dev)
 	of_dev_put(dev->rgmii_dev);
-	if (dev->mdio_dev)
 	of_dev_put(dev->mdio_dev);
-	if (dev->tah_dev)
 	of_dev_put(dev->tah_dev);
 }
 
@@ -2371,7 +2366,6 @@ static int emac_wait_deps(struct emac_instance *dev)
 	bus_unregister_notifier(&platform_bus_type, &emac_of_bus_notifier);
 	err = emac_check_deps(dev, deps) ? 0 : -ENODEV;
 	for (i = 0; i < EMAC_DEP_COUNT; i++) {
-		if (deps[i].node)
 		of_node_put(deps[i].node);
 		if (err && deps[i].ofdev)
 			of_dev_put(deps[i].ofdev);
@@ -2383,7 +2377,6 @@ static int emac_wait_deps(struct emac_instance *dev)
 		dev->tah_dev = deps[EMAC_DEP_TAH_IDX].ofdev;
 		dev->mdio_dev = deps[EMAC_DEP_MDIO_IDX].ofdev;
 	}
-	if (deps[EMAC_DEP_PREV_IDX].ofdev)
 	of_dev_put(deps[EMAC_DEP_PREV_IDX].ofdev);
 	return err;
 }
@@ -3113,7 +3106,6 @@ static void __exit emac_exit(void)
 
 	/* Destroy EMAC boot list */
 	for (i = 0; i < EMAC_BOOT_LIST_SIZE; i++)
-		if (emac_boot_list[i])
 		of_node_put(emac_boot_list[i]);
 }