mtd: hyperbus: rpc-if: Check return value of rpcif_sw_init()

[ Upstream commit 981387ed06b96908223a607f5fba6efa42728fc2 ]

rpcif_sw_init() can fail so make sure we check the return value
of it and on error exit rpcif_hb_probe() callback with error code.

Fixes: 5de15b610f78 ("mtd: hyperbus: add Renesas RPC-IF driver")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.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/20211025205631.21151-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/hyperbus/rpc-if.c b/drivers/mtd/hyperbus/rpc-if.c
index ecb050b..367b0d7 100644 (file)
--- a/drivers/mtd/hyperbus/rpc-if.c
+++ b/drivers/mtd/hyperbus/rpc-if.c
@@ -124,7 +124,9 @@ static int rpcif_hb_probe(struct platform_device *pdev)
        if (!hyperbus)
                return -ENOMEM;
 
-       rpcif_sw_init(&hyperbus->rpc, pdev->dev.parent);
+       error = rpcif_sw_init(&hyperbus->rpc, pdev->dev.parent);
+       if (error)
+               return error;
 
        platform_set_drvdata(pdev, hyperbus);