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when kmalloc() fail to allocate memory in kasprintf(), name
or full_name will be NULL, strcmp() will cause
null pointer dereference.
Fixes: 0d638a07d3 ("of: Convert to using %pOF instead of full_name")
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230727080246.519539-1-ruanjinjie@huawei.com
Signed-off-by: Rob Herring <robh@kernel.org>