Use ERR_CAST() when devm_ioremap_resource() fails.

Reported-by: kernel test robot <l...@intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfal...@ti.com>
---
Hi Vinod,

it came to my attention too late. This patch fixes the sparse warnig introduced
by the AM64 support in
https://lore.kernel.org/lkml/20201208090440.31792-1-peter.ujfal...@ti.com/

Regards,
Peter

 drivers/soc/ti/k3-ringacc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/ti/k3-ringacc.c b/drivers/soc/ti/k3-ringacc.c
index c88c305ba367..b495b0d5d0fa 100644
--- a/drivers/soc/ti/k3-ringacc.c
+++ b/drivers/soc/ti/k3-ringacc.c
@@ -1476,7 +1476,7 @@ struct k3_ringacc *k3_ringacc_dmarings_init(struct 
platform_device *pdev,
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ringrt");
        base_rt = devm_ioremap_resource(dev, res);
        if (IS_ERR(base_rt))
-               return base_rt;
+               return ERR_CAST(base_rt);
 
        ringacc->rings = devm_kzalloc(dev,
                                      sizeof(*ringacc->rings) *
-- 
Peter

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