drm/amdgpu: Fix a bug in jpeg_v1_0_start()

Originally the last WREG32_SOC15() was a part of the if statement block
but the curly braces are on the wrong line.

Fixes: bb0db70f ("drm/amdgpu: separate JPEG1.0 code out from VCN1.0")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>