crypto: aead - Ignore return value from crypto_unregister_alg

No new code should be using the return value of crypto_unregister_alg
as it will become void soon.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/aead.c b/crypto/aead.c
index 4bab3cf..ac44792 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -890,9 +890,9 @@
 }
 EXPORT_SYMBOL_GPL(crypto_register_aead);
 
-int crypto_unregister_aead(struct aead_alg *alg)
+void crypto_unregister_aead(struct aead_alg *alg)
 {
-	return crypto_unregister_alg(&alg->base);
+	crypto_unregister_alg(&alg->base);
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_aead);