drm/amdgpu: delete duplicate condition in gfx_v11_0_soft_reset()

We know that "grbm_soft_reset" is true because we're already inside an
if (grbm_soft_reset) condition.  No need to test again.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c

@@ -4780,7 +4780,6 @@ static int gfx_v11_0_soft_reset(void *handle)
 		/* Disable MEC parsing/prefetching */
 		gfx_v11_0_cp_compute_enable(adev, false);
 
-		if (grbm_soft_reset) {
 		tmp = RREG32_SOC15(GC, 0, regGRBM_SOFT_RESET);
 		tmp |= grbm_soft_reset;
 		dev_info(adev->dev, "GRBM_SOFT_RESET=0x%08X\n", tmp);
@@ -4792,7 +4791,6 @@ static int gfx_v11_0_soft_reset(void *handle)
 		tmp &= ~grbm_soft_reset;
 		WREG32_SOC15(GC, 0, regGRBM_SOFT_RESET, tmp);
 		tmp = RREG32_SOC15(GC, 0, regGRBM_SOFT_RESET);
-		}
 
 		/* Wait a little for things to settle down */
 		udelay(50);