ARM: pxa: ssp: unneeded to free devm_ allocated data

devm_ allocated data will be automatically freed. The free
of devm_ allocated data is invalid.

Fixes: 1c459de1e645 ("ARM: pxa: ssp: use devm_ functions")
Signed-off-by: Peng Hao <[e-mail]>
[title's prefix changed]
Signed-off-by: Robert Jarzmik <[e-mail]>

arch/arm/plat-pxa/ssp.c

···
 	if (ssp == NULL)
 		return -ENODEV;
 
-	iounmap(ssp->mmio_base);
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	release_mem_region(res->start, resource_size(res));
 
···
 	list_del(&ssp->node);
 	mutex_unlock(&ssp_lock);
 
-	kfree(ssp);
 	return 0;
 }