firmware: fix wrong memory deallocation in fw_add_devm_name()

Device resource data allocated with devres_alloc() must be deallocated
by devres_free().

Signed-off-by: Vladimir Zapolskiy <[e-mail]>
Acked-by: Ming Lei <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/base/firmware_class.c

···
 		return -ENOMEM;
 	fwn->name = kstrdup_const(name, GFP_KERNEL);
 	if (!fwn->name) {
-		kfree(fwn);
+		devres_free(fwn);
 		return -ENOMEM;
 	}