net: cosmetic: Fix checkpatch.pl failures in eth.c

There were still a few failures in net/eth.c, especially in the legacy
part of the code.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>

net/eth.c

@@ -74,8 +74,10 @@ static int eth_mac_skip(int index)
 {
 	char enetvar[15];
 	char *skip_state;
+
 	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
-	return ((skip_state = getenv(enetvar)) != NULL);
+	skip_state = getenv(enetvar);
+	return skip_state != NULL;
 }
 
 static void eth_current_changed(void);
@@ -275,8 +277,9 @@ int eth_init(void)
 				priv->state = ETH_STATE_ACTIVE;
 				return 0;
 			}
-		} else
+		} else {
 			ret = eth_errno;
+		}
 
 		debug("FAIL\n");
 
@@ -640,7 +643,8 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
 
 		ret = dev->write_hwaddr(dev);
 		if (ret)
-			printf("\nWarning: %s failed to set MAC address\n", dev->name);
+			printf("\nWarning: %s failed to set MAC address\n",
+			       dev->name);
 	}
 
 	return ret;
@@ -654,7 +658,8 @@ int eth_register(struct eth_device *dev)
 	assert(strlen(dev->name) < sizeof(dev->name));
 
 	if (!eth_devices) {
-		eth_current = eth_devices = dev;
+		eth_devices = dev;
+		eth_current = dev;
 		eth_current_changed();
 	} else {
 		for (d = eth_devices; d->next != eth_devices; d = d->next)
@@ -725,8 +730,9 @@ int eth_initialize(void)
 	} else if (cpu_eth_init != __def_eth_init) {
 		if (cpu_eth_init(gd->bd) < 0)
 			printf("CPU Net Initialization Failed\n");
-	} else
+	} else {
 		printf("Net Initialization Skipped\n");
+	}
 
 	if (!eth_devices) {
 		puts("No ethernet found.\n");