phy: exynos-mipi-video: Fixup the test for state->regmap
phy: exynos-mipi-video: Fixup the test for state->regmap

syscon_regmap_lookup_by_phandle() returns ERR_PTR on error.
Thus don't use null test against state->regmap.

Signed-off-by: Axel Lin <b6ffd6973e972cb999e8e535ab74da7fee0c035f@ingics.com>
Signed-off-by: Kishon Vijay Abraham I <c224db9378a929ae8338a052bbb1b30fb46cdd39@ti.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs