drm/amdgpu/powerplay: remove redundant assignment to variable baco_state

Variable baco_state is initialized to a value that is never read and it is
re-assigned later. The initialization is redundant and can be removed.

Addresses-Coverity: ("Unused Value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

@@ -1664,7 +1664,7 @@ static bool smu_v11_0_baco_is_support(struct smu_context *smu)
 static enum smu_baco_state smu_v11_0_baco_get_state(struct smu_context *smu)
 {
 	struct smu_baco_context *smu_baco = &smu->smu_baco;
-	enum smu_baco_state baco_state = SMU_BACO_STATE_EXIT;
+	enum smu_baco_state baco_state;
 
 	mutex_lock(&smu_baco->mutex);
 	baco_state = smu_baco->state;