usb: typec: altmodes/displayport: Drop the device reference in dp_altmode_probe()

usb: typec: altmodes/displayport: Drop the device reference in dp_altmode_probe()

In error paths, call typec_altmode_put_plug() to drop the device reference
obtained by typec_altmode_get_plug().

Fixes: 71ba4fe56656 ("usb: typec: altmodes/displayport: add SOP' support")
Cc: stable <stable@kernel.org>
Signed-off-by: Haoxiang Li <lihaoxiang@isrc.iscas.ac.cn>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251206070445.190770-1-lihaoxiang@isrc.iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>