memory: renesas-rpc-if: Return error in case devm_ioremap_resource() fails

[ Upstream commit 818fdfa89baac77a8df5a2c30f4fb798cc937aa0 ]

Make sure we return error in case devm_ioremap_resource() fails for dirmap
resource.

Fixes: ca7d8b980b67 ("memory: add Renesas RPC-IF driver")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20211025205631.21151-6-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c
index a760ab0..9019121 100644 (file)
--- a/drivers/memory/renesas-rpc-if.c
+++ b/drivers/memory/renesas-rpc-if.c
@@ -245,7 +245,7 @@ int rpcif_sw_init(struct rpcif *rpc, struct device *dev)
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dirmap");
        rpc->dirmap = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(rpc->dirmap))
-               rpc->dirmap = NULL;
+               return PTR_ERR(rpc->dirmap);
        rpc->size = resource_size(res);
 
        rpc->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);