diff --git a/lib/ecdsa/ecdsa-libcrypto.c b/lib/ecdsa/ecdsa-libcrypto.c
index 1c5dde6..f0095e9 100644
--- a/lib/ecdsa/ecdsa-libcrypto.c
+++ b/lib/ecdsa/ecdsa-libcrypto.c
@@ -363,8 +363,10 @@
 	ret = prepare_ctx(&ctx, info);
 	if (ret >= 0) {
 		ret = do_add(&ctx, fdt, fdt_key_name, info);
-		if (ret < 0)
-			ret = ret == -FDT_ERR_NOSPACE ? -ENOSPC : -EIO;
+		if (ret < 0) {
+			free_ctx(&ctx);
+			return ret == -FDT_ERR_NOSPACE ? -ENOSPC : -EIO;
+		}
 	}
 
 	free_ctx(&ctx);