crypto: lzo - use kvfree() helper

kvfree() helper is now available, use it instead of open code it.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/lzo.c b/crypto/lzo.c
index 252e791d..a8ff2f7 100644
--- a/crypto/lzo.c
+++ b/crypto/lzo.c
@@ -45,10 +45,7 @@
 {
 	struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	if (is_vmalloc_addr(ctx->lzo_comp_mem))
-		vfree(ctx->lzo_comp_mem);
-	else
-		kfree(ctx->lzo_comp_mem);
+	kvfree(ctx->lzo_comp_mem);
 }
 
 static int lzo_compress(struct crypto_tfm *tfm, const u8 *src,