vfio: fix resource leak
vfio: fix resource leak

Coverity ID 13289: Resource leak:
The system resource will not be reclaimed and reused,
reducing the future availability of the resource.
In pci_vfio_get_group_fd: Leak of memory or pointers to system resources

Fixes: ff0b67d1c868 ("vfio: DMA mapping")

Signed-off-by: Daniel Mrzyglod <998f22cc3a6ac3535545292178d834b83a4e2a87@intel.com>
Acked-by: Anatoly Burakov <814e00d8f6e4e81b7ccc7e3e5a0bfec0078f0203@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk