staging: ozwpan: Move code from success handling to error handling

The original version was success handling rather than error handling,
therefore this patch reduces nesting.

Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ozwpan/ozhcd.c

@@ -283,7 +283,9 @@ static struct oz_endpoint *oz_ep_alloc(int buffer_size, gfp_t mem_flags)
 	struct oz_endpoint *ep;
 
 	ep = kzalloc(sizeof(struct oz_endpoint)+buffer_size, mem_flags);
-	if (ep) {
+	if (!ep)
+		return NULL;
+
 	INIT_LIST_HEAD(&ep->urb_list);
 	INIT_LIST_HEAD(&ep->link);
 	ep->credit = -1;
@@ -291,7 +293,7 @@ static struct oz_endpoint *oz_ep_alloc(int buffer_size, gfp_t mem_flags)
 		ep->buffer_size = buffer_size;
 		ep->buffer = (u8 *)(ep+1);
 	}
-	}
+
 	return ep;
 }
 

drivers/staging/ozwpan/ozpd.c

@@ -103,10 +103,11 @@ void oz_pd_put(struct oz_pd *pd)
 struct oz_pd *oz_pd_alloc(const u8 *mac_addr)
 {
 	struct oz_pd *pd;
+	int i;
 
 	pd = kzalloc(sizeof(struct oz_pd), GFP_ATOMIC);
-	if (pd) {
-		int i;
+	if (!pd)
+		return NULL;
 
 	atomic_set(&pd->ref_count, 2);
 	for (i = 0; i < OZ_NB_APPS; i++)
@@ -130,7 +131,7 @@ struct oz_pd *oz_pd_alloc(const u8 *mac_addr)
 	hrtimer_init(&pd->timeout, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 	pd->heartbeat.function = oz_pd_heartbeat_event;
 	pd->timeout.function = oz_pd_timeout_event;
-	}
+
 	return pd;
 }