net: return operator cleanup

Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index 4088c89..9352d12 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -345,12 +345,12 @@
 
 static inline int TSN_lt(__u32 s, __u32 t)
 {
-	return (((s) - (t)) & TSN_SIGN_BIT);
+	return ((s) - (t)) & TSN_SIGN_BIT;
 }
 
 static inline int TSN_lte(__u32 s, __u32 t)
 {
-	return (((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT));
+	return ((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT);
 }
 
 /* Compare two SSNs */
@@ -369,12 +369,12 @@
 
 static inline int SSN_lt(__u16 s, __u16 t)
 {
-	return (((s) - (t)) & SSN_SIGN_BIT);
+	return ((s) - (t)) & SSN_SIGN_BIT;
 }
 
 static inline int SSN_lte(__u16 s, __u16 t)
 {
-	return (((s) == (t)) || (((s) - (t)) & SSN_SIGN_BIT));
+	return ((s) == (t)) || (((s) - (t)) & SSN_SIGN_BIT);
 }
 
 /*
@@ -388,7 +388,7 @@
 
 static inline int ADDIP_SERIAL_gte(__u16 s, __u16 t)
 {
-	return (((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT));
+	return ((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT);
 }
 
 /* Check VTAG of the packet matches the sender's own tag. */