LSM: change if statements into something more readable for the ipc/*, mm/*, and net/* files.

ipc/msg.c

@@ -101,7 +101,8 @@ static int newque (key_t key, int msgflg)
 	msq->q_perm.key = key;
 
 	msq->q_perm.security = NULL;
-	if ((retval = security_msg_queue_alloc(msq))) {
+	retval = security_msg_queue_alloc(msq);
+	if (retval) {
 		ipc_rcu_free(msq, sizeof(*msq));
 		return retval;
 	}

ipc/sem.c

@@ -136,7 +136,8 @@ static int newary (key_t key, int nsems, int semflg)
 	sma->sem_perm.key = key;
 
 	sma->sem_perm.security = NULL;
-	if ((retval = security_sem_alloc(sma))) {
+	retval = security_sem_alloc(sma);
+	if (retval) {
 		ipc_rcu_free(sma, size);
 		return retval;
 	}

ipc/shm.c

@@ -188,7 +188,8 @@ static int newseg (key_t key, int shmflg, size_t size)
 	shp->shm_flags = (shmflg & S_IRWXUGO);
 
 	shp->shm_perm.security = NULL;
-	if ((error = security_shm_alloc(shp))) {
+	error = security_shm_alloc(shp);
+	if (error) {
 		ipc_rcu_free(shp, sizeof(*shp));
 		return error;
 	}

mm/mmap.c

@@ -504,7 +504,8 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr,
 		}
 	}
 
-	if ((error = security_file_mmap(file, prot, flags)))
+	error = security_file_mmap(file, prot, flags);
+	if (error)
 		return error;
 		
 	/* Clear old maps */

mm/mprotect.c

@@ -263,7 +263,8 @@ sys_mprotect(unsigned long start, size_t len, unsigned long prot)
 			goto out;
 		}
 
-		if ((error = security_file_mprotect(vma, prot)))
+		error = security_file_mprotect(vma, prot);
+		if (error)
 			goto out;
 
 		if (vma->vm_end > end) {

net/core/scm.c

@@ -217,7 +217,8 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
 	for (i=0, cmfptr=(int*)CMSG_DATA(cm); i<fdmax; i++, cmfptr++)
 	{
 		int new_fd;
-		if ((err = security_file_receive(fp[i])))
+		err = security_file_receive(fp[i]);
+		if (err)
 			break;
 		err = get_unused_fd();
 		if (err < 0)