PCI/MSI: Check kmalloc() return value, fix leak of name
Coverity reported that I forgot to check the return value of kmalloc() when creating the MSI attribute name, so fix that up and properly free it if there is an error when allocating the msi_dev_attr variable. Found by Coverity (CID 1163315 and 1163316e). Fixes: 1c51b50c ("PCI/MSI: Export MSI mode using attributes, not kobjects") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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