spi: rpc-if: Use correct device for hardware reinitialization on resume

[ Upstream commit 7b25dba ]

rpcif_spi_resume() currently passes the SPI controller device to
rpcif_hw_init(), but the function should be called with the RPC
interface device.

Retrieve the rpcif private data from the SPI controller and pass
rpc->dev instead. Also propagate the return value of rpcif_hw_init() so
that a failure during resume is properly reported rather than silently
ignored.

Fixes: ad47287 ("spi: rpc-if: Add resume support for RZ/G3E")
Signed-off-by: Quang Nguyen <quang.nguyen.wx@renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260618081932.172168-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Quang Nguyen

drivers/spi/spi-rpc-if.c

@@ -192,8 +192,12 @@ static int __maybe_unused rpcif_spi_suspend(struct device *dev)
 static int __maybe_unused rpcif_spi_resume(struct device *dev)
 {
 	struct spi_controller *ctlr = dev_get_drvdata(dev);
+	struct rpcif *rpc = spi_controller_get_devdata(ctlr);
+	int ret;
 
-	rpcif_hw_init(dev, false);
+	ret = rpcif_hw_init(rpc->dev, false);
+	if (ret)
+		return ret;
 
 	return spi_controller_resume(ctlr);
 }