watchdog: sp5100_tco: Fix pci_dev reference leak in sp5100_tco_init()

sp5100_tco_init() stores the PCI device matched by for_each_pci_dev()
in the global sp5100_tco_pci and keeps its reference for the lifetime
of the driver, but neither sp5100_tco_exit() nor the error paths of
sp5100_tco_init() call pci_dev_put(), leaking the reference on driver
registration failure and on every module load/unload cycle.

Drop the reference when the platform driver or device registration
fails and when the module is unloaded.

Fixes: 15e28bf13008 ("watchdog: Add support for sp5100 chipset TCO")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20260916170511.2086199-1-vulab@iscas.ac.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

0 files changed, 0 insertions, 0 deletions