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 <[e-mail]>
Reviewed-by: Peter Chen <[e-mail]>
Signed-off-by: Pawel Laszczak <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/cdns3/cdnsp-gadget.c

···
 		     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);