drivers/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/drivers/net/3c523.c b/drivers/net/3c523.c
index a7b0e5e..ca00f0a 100644
--- a/drivers/net/3c523.c
+++ b/drivers/net/3c523.c
@@ -463,7 +463,7 @@
 
 	/* we didn't find any 3c523 in the slots we checked for */
 	if (slot == MCA_NOTFOUND)
-		return ((base_addr || irq) ? -ENXIO : -ENODEV);
+		return (base_addr || irq) ? -ENXIO : -ENODEV;
 
 	mca_set_adapter_name(slot, "3Com 3c523 Etherlink/MC");
 	mca_set_adapter_procfn(slot, (MCA_ProcFn) elmc_getinfo, dev);