Remove unused temp variable from the dmub_rb_flush_pending function by
using arithmetic to remove the loop.

The -Wunused-but-set-variable warning was pointed out by Clang with the
following warning:

drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h:2921:12: warning:
variable 'temp' set but not used [-Wunused-but-set-variable]
    uint64_t temp;
             ^

Signed-off-by: Maíra Canal <maira.ca...@usp.br>
---
 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h 
b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index fb01ff49e655..d3088836d4e4 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -2918,11 +2918,8 @@ static inline void dmub_rb_flush_pending(const struct 
dmub_rb *rb)
        while (rptr != wptr) {
                uint64_t volatile *data = (uint64_t volatile *)((uint8_t 
*)(rb->base_address) + rptr);
                //uint64_t volatile *p = (uint64_t volatile *)data;
-               uint64_t temp;
-               uint8_t i;
 
-               for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++)
-                       temp = *data++;
+               *data += DMUB_RB_CMD_SIZE / sizeof(uint64_t);
 
                rptr += DMUB_RB_CMD_SIZE;
                if (rptr >= rb->capacity)
-- 
2.35.1

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