net: Remove unnecessary returns from void function()s

This patch removes from net/ (but not any netfilter files)
all the unnecessary return; statements that precede the
last closing brace of void functions.

It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.

Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
  xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/sm_sideeffect.c

@@ -892,8 +892,6 @@ static void sctp_cmd_process_fwdtsn(struct sctp_ulpq *ulpq,
 	sctp_walk_fwdtsn(skip, chunk) {
 		sctp_ulpq_skip(ulpq, ntohs(skip->stream), ntohs(skip->ssn));
 	}
-
-	return;
 }
 
 /* Helper function to remove the association non-primary peer
@@ -912,8 +910,6 @@ static void sctp_cmd_del_non_primary(struct sctp_association *asoc)
 			sctp_assoc_del_peer(asoc, &t->ipaddr);
 		}
 	}
-
-	return;
 }
 
 /* Helper function to set sk_err on a 1-1 style socket. */