net: Remove unnecessary semicolons after switch statements

Also added an explicit break; to avoid
a fallthrough in net/ipv4/tcp_input.c

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 1a7db92..a0f4964 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -522,7 +522,7 @@
 			p += ETH_GSTRING_LEN;
 			num_strings++;
 			goto unknown_filter;
-		};
+		}
 
 		/* now the rest of the filters */
 		switch (fsc->fs.flow_type) {
@@ -646,7 +646,7 @@
 			p += ETH_GSTRING_LEN;
 			num_strings++;
 			break;
-		};
+		}
 		sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
 			fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
 		p += ETH_GSTRING_LEN;