ste_dma40: Move an assignment in d40_prep_desc()

Move one assignment for the local variable "cfg" so that its setting
will only be performed after a call of the function "d40_desc_get"
succeeded by this function.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 087861af983e..07e7eb39eda1 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2198,7 +2198,7 @@ static struct d40_desc *
 d40_prep_desc(struct d40_chan *chan, struct scatterlist *sg,
               unsigned int sg_len, unsigned long dma_flags)
 {
-        struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
+        struct stedma40_chan_cfg *cfg;
         struct d40_desc *desc;
         int ret;
 
@@ -2206,6 +2206,7 @@ d40_prep_desc(struct d40_chan *chan, struct scatterlist *sg,
         if (!desc)
                 return NULL;
 
+        cfg = &chan->dma_cfg;
         desc->lli_len = d40_sg_2_dmalen(sg, sg_len, cfg->src_info.data_width,
                                         cfg->dst_info.data_width);
         if (desc->lli_len < 0) {