ipc user fix

Author: softwarecki

src/audio/module_adapter/library/userspace_proxy.c

@@ -67,6 +67,8 @@ struct k_work_user *userspace_proxy_register_ipc_handler(struct processing_modul
 		tr_dbg(&userspace_proxy_tr, "Set DP event %p for module %p",
 		       (void *)event, (void *)mod);
 		user_ctx->dp_event = event;
+		user_ctx->work_item->event = event;
+
 		assert(user_ctx->work_item);
 		return &user_ctx->work_item->work_item;
 	}
@@ -195,7 +197,7 @@ static int userspace_proxy_invoke(struct userspace_context *user_ctx, uint32_t c
 		.size = MAILBOX_HOSTBOX_SIZE,
 		.attr = user_get_partition_attr(ipc_req_buf) | K_MEM_PARTITION_P_RO_U_RO,
 	};
-	int ret, ret2;
+	int ret = 0, ret2;
 
 	params->cmd = cmd;