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x86/pmem: Fix platform-device leak in error path

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[ Upstream commit 229e73d46994f15314f58b2d39bf952111d89193 ]

Make sure to free the platform device in the unlikely event that
registration fails.

Fixes: 7a67832c7e ("libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220620140723.9810-1-johan@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Johan Hovold 2022-06-20 16:07:23 +02:00 committed by Greg Kroah-Hartman
parent 6a28f363d3
commit 2c07688d3e
1 changed files with 6 additions and 1 deletions
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7
arch/x86/kernel/pmem.c
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@ -27,6 +27,11 @@ static __init int register_e820_pmem(void)
* simply here to trigger the module to load on demand.
*/
pdev = platform_device_alloc("e820_pmem", -1);
return platform_device_add(pdev);
rc = platform_device_add(pdev);
if (rc)
platform_device_put(pdev);
return rc;
}
device_initcall(register_e820_pmem);