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

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: 5de15b6 ("mtd: hyperbus: add Renesas RPC-IF driver")
Signed-off-by: Lad Prabhakar <[email protected]>
Signed-off-by: Vignesh Raghavendra <[email protected]>
Reviewed-by: Biju Das <[email protected]>
Reviewed-by: Wolfram Sang <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: prabhakarlad

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);