hwrng: don't double-check old_rng.

Interesting anti-pattern.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 8d609a026465..e384ee3ed604 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -472,14 +472,13 @@ int hwrng_register(struct hwrng *rng)
         }
 
         old_rng = current_rng;
+        err = 0;
         if (!old_rng) {
                 err = hwrng_init(rng);
                 if (err)
                         goto out_unlock;
                 set_current_rng(rng);
-        }
-        err = 0;
-        if (!old_rng) {
+
                 err = register_miscdev();
                 if (err) {
                         drop_current_rng();