mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path

If rpcif_hw_init() fails, Runtime PM is left enabled.

Fixes: b04cc0d ("memory: renesas-rpc-if: Add support for RZ/G2L")
Signed-off-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Wolfram Sang <[email protected]>
Reviewed-by: Lad Prabhakar <[email protected]>
Reviewed-by: Sergey Shtylyov <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/f3070e1af480cb252ae183d479a593dbbf947685.1655457790.git.geert+renesas@glider.be

Author: geertu

drivers/mtd/hyperbus/rpc-if.c

@@ -134,7 +134,7 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 
 	error = rpcif_hw_init(&hyperbus->rpc, true);
 	if (error)
-		return error;
+		goto out_disable_rpm;
 
 	hyperbus->hbdev.map.size = hyperbus->rpc.size;
 	hyperbus->hbdev.map.virt = hyperbus->rpc.dirmap;
@@ -145,8 +145,12 @@ static int rpcif_hb_probe(struct platform_device *pdev)
 	hyperbus->hbdev.np = of_get_next_child(pdev->dev.parent->of_node, NULL);
 	error = hyperbus_register_device(&hyperbus->hbdev);
 	if (error)
-		rpcif_disable_rpm(&hyperbus->rpc);
+		goto out_disable_rpm;
+
+	return 0;
 
+out_disable_rpm:
+	rpcif_disable_rpm(&hyperbus->rpc);
 	return error;
 }