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arm/xen: Fix some refcount leaks 

The of_find_compatible_node() function returns a node pointer with
refcount incremented, We should use of_node_put() on it when done
Add the missing of_node_put() to release the refcount.

Fixes: 9b08aaa319 ("ARM: XEN: Move xen_early_init() before efi_init()")
Fixes: b2371587fe ("arm/xen: Read extended regions from DT and init Xen resource")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
This commit is contained in:
Miaoqian Lin 2022-04-20 01:49:13 +00:00 committed by Stefano Stabellini
parent f31076a6b2
commit 533bec143a
1 changed files with 7 additions and 2 deletions
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9
arch/arm/xen/enlighten.c
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@ -337,12 +337,15 @@ int __init arch_xen_unpopulated_init(struct resource **res)
if (!nr_reg) {
pr_err("No extended regions are found\n");
of_node_put(np);
return -EINVAL;
}
regs = kcalloc(nr_reg, sizeof(*regs), GFP_KERNEL);
if (!regs)
if (!regs) {
of_node_put(np);
return -ENOMEM;
}
/*
* Create resource from extended regions provided by the hypervisor to be
@ -403,8 +406,8 @@ int __init arch_xen_unpopulated_init(struct resource **res)
*res = &xen_resource;
err:
of_node_put(np);
kfree(regs);
return rc;
}
#endif
@ -424,8 +427,10 @@ static void __init xen_dt_guest_init(void)
if (of_address_to_resource(xen_node, GRANT_TABLE_INDEX, &res)) {
pr_err("Xen grant table region is not found\n");
of_node_put(xen_node);
return;
}
of_node_put(xen_node);
xen_grant_frames = res.start;
}