firmware: qcom_scm: Remove redundant piece of code

firmware: qcom_scm: Remove redundant piece of code

The qcom_scm_pas_metadata_release() function already frees the allocated
memory and sets ctx->ptr to NULL. Resetting ctx->phys and ctx->size to
zero is unnecessary because the context is expected to be discarded
after release.

Lets removes redundant assignments.

Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260105-kvmrprocv10-v10-2-022e96815380@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>