net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions

This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.

Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/message/fusion/mptlan.c b/drivers/message/fusion/mptlan.c
index a9e48e2..bc2ec21 100644
--- a/drivers/message/fusion/mptlan.c
+++ b/drivers/message/fusion/mptlan.c
@@ -795,7 +795,7 @@
 			IOC_AND_NETDEV_NAMES_s_s(dev),
 			le32_to_cpu(pSimple->FlagsLength)));
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
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