i2o: fix simple_return.cocci warnings

Author: kbuild test robot <fengguang.wu@intel.com>

drivers/staging/i2o/iop.c:777:1-3: WARNING: end returns can be simpified

 Simplify a trivial if-return sequence.  Possibly combine with a
 preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci

CC: Alan Cox 
Signed-off-by: Fengguang Wu 
Signed-off-by: Greg Kroah-Hartman 
---
 drivers/staging/i2o/iop.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)
 
diff --git a/drivers/staging/i2o/iop.c b/drivers/staging/i2o/iop.c
index c88df55..3c23790 100644
--- a/drivers/staging/i2o/iop.c
+++ b/drivers/staging/i2o/iop.c
@@ -777,11 +777,7 @@ static int i2o_iop_online(struct i2o_controller *c)
 
 	/* In READY state */
 	osm_debug("%s: Attempting to enable...\n", c->name);
-	rc = i2o_iop_enable(c);
-	if (rc)
-		return rc;
-
-	return 0;
+	return i2o_iop_enable(c);
 }
 
 /**