drm/amdgpu: unlock on error in gfx_v9_4_3_kiq_resume()

Smatch complains that we need to drop this lock before returning.

    drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:1838 gfx_v9_4_3_kiq_resume()
    warn: inconsistent returns 'ring->mqd_obj->tbo.base.resv'.

Fixes: 86301129 ("drm/amdgpu: split gc v9_4_3 functionality from gc v9_0")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

@@ -1824,8 +1824,10 @@ static int gfx_v9_4_3_kiq_resume(struct amdgpu_device *adev, int xcc_id)
 		return r;
 
 	r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-	if (unlikely(r != 0))
+	if (unlikely(r != 0)) {
+		amdgpu_bo_unreserve(ring->mqd_obj);
 		return r;
+	}
 
 	gfx_v9_4_3_kiq_init_queue(ring, xcc_id);
 	amdgpu_bo_kunmap(ring->mqd_obj);