[PATCH v2 1/2] crypto: qat - introduces a variable to handle error codes

[Quentin Lambert]

Most error code used to jump to a label that lead to a "return -EFAULT"
statement. This patch introduces a variable that stores the error code
so that other error branches can use the same label to exit.

Signed-off-by: Quentin Lambert <lambert.quen...@gmail.com>

---
 drivers/crypto/qat/qat_common/qat_uclo.c |   13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

--- a/drivers/crypto/qat/qat_common/qat_uclo.c
+++ b/drivers/crypto/qat/qat_common/qat_uclo.c
@@ -966,6 +966,7 @@ static int qat_uclo_parse_uof_obj(struct
 {
        struct icp_qat_uclo_objhandle *obj_handle = handle->obj_handle;
        unsigned int ae;
+       int ret;
 
        obj_handle->uword_buf = kcalloc(UWORD_CPYBUF_SIZE, sizeof(uint64_t),
                                        GFP_KERNEL);
@@ -987,29 +988,35 @@ static int qat_uclo_parse_uof_obj(struct
            !qat_uclo_map_str_table(obj_handle->obj_hdr, ICP_QAT_UOF_STRT,
                                    &obj_handle->str_table)) {
                pr_err("QAT: UOF doesn't have effective images\n");
+               ret = -EFAULT;
                goto out_err;
        }
        obj_handle->uimage_num =
                qat_uclo_map_uimage(obj_handle, obj_handle->ae_uimage,
                                    ICP_QAT_UCLO_MAX_AE * ICP_QAT_UCLO_MAX_CTX);
-       if (!obj_handle->uimage_num)
+       if (!obj_handle->uimage_num) {
+               ret = -EFAULT;
                goto out_err;
+       }
        if (qat_uclo_map_ae(handle, handle->hal_handle->ae_max_num)) {
                pr_err("QAT: Bad object\n");
+               ret = -EFAULT;
                goto out_check_uof_aemask_err;
        }
        qat_uclo_init_uword_num(handle);
        qat_uclo_map_initmem_table(&obj_handle->encap_uof_obj,
                                   &obj_handle->init_mem_tab);
-       if (qat_uclo_set_ae_mode(handle))
+       if (qat_uclo_set_ae_mode(handle)) {
+               ret = -EFAULT;
                goto out_check_uof_aemask_err;
+       }
        return 0;
 out_check_uof_aemask_err:
        for (ae = 0; ae < obj_handle->uimage_num; ae++)
                kfree(obj_handle->ae_uimage[ae].page);
 out_err:
        kfree(obj_handle->uword_buf);
-       return -EFAULT;
+       return ret;
 }
 
 static int qat_uclo_map_suof_file_hdr(struct icp_qat_fw_loader_handle *handle,