usb: cdnsp: remove not used temp_64 variables

Patch removes initialized but not used variables temp_64
from cdnsp_run function.
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20220111114449.44402-1-pawell@gli-login.cadence.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/cdns3/cdnsp-gadget.c

@@ -1243,12 +1243,9 @@ static int cdnsp_run(struct cdnsp_device *pdev,
 		     enum usb_device_speed speed)
 {
 	u32 fs_speed = 0;
-	u64 temp_64;
 	u32 temp;
 	int ret;
 
-	temp_64 = cdnsp_read_64(&pdev->ir_set->erst_dequeue);
-	temp_64 &= ~ERST_PTR_MASK;
 	temp = readl(&pdev->ir_set->irq_control);
 	temp &= ~IMOD_INTERVAL_MASK;
 	temp |= ((IMOD_DEFAULT_INTERVAL / 250) & IMOD_INTERVAL_MASK);