drm/xe: Do not forget to drm_dev_put() in xe_pci_probe()

The function drm_dev_put() should also be called if xe_device_probe()
fails.

v2:
  - Improve commit message. (Lucas)

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20230519194802.578182-1-gustavo.sousa@intel.com


Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>