fpga: fpga-mgr: socfpga: Simplify registration

Simplify registration using new devm_fpga_mgr_register() API.

Reviewed-by: Tom Rix <trix@redhat.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/20201115195127.284487-7-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/fpga/socfpga.c

@@ -576,18 +576,7 @@ static int socfpga_fpga_probe(struct platform_device *pdev)
 	if (!mgr)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, mgr);
-
-	return fpga_mgr_register(mgr);
-}
-
-static int socfpga_fpga_remove(struct platform_device *pdev)
-{
-	struct fpga_manager *mgr = platform_get_drvdata(pdev);
-
-	fpga_mgr_unregister(mgr);
-
-	return 0;
+	return devm_fpga_mgr_register(dev, mgr);
 }
 
 #ifdef CONFIG_OF
@@ -601,7 +590,6 @@ MODULE_DEVICE_TABLE(of, socfpga_fpga_of_match);
 
 static struct platform_driver socfpga_fpga_driver = {
 	.probe = socfpga_fpga_probe,
-	.remove = socfpga_fpga_remove,
 	.driver = {
 		.name	= "socfpga_fpga_manager",
 		.of_match_table = of_match_ptr(socfpga_fpga_of_match),