tsec: fix the return value for tsec_eth_init()

The Ethernet initialization functions are supposed to return the number of
devices initialized, so fix tsec_eth_init() so that they returns the number of
TSECs initialized, instead of just zero.  This is safe because the return value
is currently ignored by all callers, but now they don't have to ignore it.

In general, if an function initializes only one device, then it should return
a negative number if there's an error.  If it initializes more than one device,
then it should never return a negative number.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

drivers/net/tsec.c

@@ -95,14 +95,23 @@ static struct tsec_info_struct tsec_info[] = {
 #endif
 };
 
+/*
+ * Initialize all the TSEC devices
+ *
+ * Returns the number of TSEC devices that were initialized
+ */
 int tsec_eth_init(bd_t *bis, struct tsec_info_struct *tsecs, int num)
 {
 	int i;
+	int ret, count = 0;
 
-	for (i = 0; i < num; i++)
-		tsec_initialize(bis, &tsecs[i]);
+	for (i = 0; i < num; i++) {
+		ret = tsec_initialize(bis, &tsecs[i]);
+		if (ret > 0)
+			count += ret;
+	}
 
-	return 0;
+	return count;
 }
 
 int tsec_standard_init(bd_t *bis)