[PATCH] hwrng: fix simple_return.cocci warnings

[kbuild test robot]

drivers/char/hw_random/stm32-rng.c:164:1-4: 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: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---

 stm32-rng.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -161,11 +161,7 @@ static int stm32_rng_probe(struct platfo
 	priv->rng.read = stm32_rng_read,
 	priv->rng.priv = (unsigned long) dev;
 
-	err = hwrng_register(&priv->rng);
-	if (err)
-		return err;
-
-	return 0;
+	return hwrng_register(&priv->rng);
 }
 
 static const struct of_device_id stm32_rng_match[] = {
--
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