realtek: 5.15: fix uninizialized variable in rtl83xx qos driver

realtek: 5.15: fix uninizialized variable in rtl83xx qos driver

Fix uninizialized variable in rtl83xx qos driver
Fix compilation error:
drivers/net/dsa/rtl83xx/qos.c: In function 'rtl838x_setup_prio2queue_matrix':
drivers/net/dsa/rtl83xx/qos.c:298:19: error: 'v' is used uninitialized [-Werror=uninitialized]
  298 |                 v |= i << (min_queues[i] * 3);
      |                 ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/dsa/rtl83xx/qos.c:294:13: note: 'v' was declared here
  294 |         u32 v;
      |             ^
drivers/net/dsa/rtl83xx/qos.c: In function 'rtl83xx_setup_prio2queue_cpu_matrix':
drivers/net/dsa/rtl83xx/qos.c:320:19: error: 'v' is used uninitialized [-Werror=uninitialized]
  320 |                 v |= max_queues[i] << (i * 3);
      |                 ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/dsa/rtl83xx/qos.c:316:13: note: 'v' was declared here
  316 |         u32 v;
      |             ^
cc1: all warnings being treated as errors
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>