regulator: cpr3-util: add missing error code return statement

Change 64fec1f3 ("regulator:
cpr3-regulator: add support for CPRh-compliant controllers")
refactored cpr3_parse_common_ctrl_data() and introduced a bug
returning the error code after a VDD regulator get failure.
Fix this.

Change-Id: I486151ce61dab3c3f5a05daa2325386aacdd9960
CRs-Fixed: 984037
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>