remoteproc: qcom: Fix leak when custom dump_segments addition fails

remoteproc: qcom: Fix leak when custom dump_segments addition fails

Free allocated minidump_region 'name' in qcom_add_minidump_segments()
when failing before adding the region to 'dump_segments'. Otherwise,
the 'name' is not tracked and is never freed by qcom_minidump_cleanup().

Return error when adding to 'dump_segments' fails.

Cc: stable@vger.kernel.org # v5.11
Fixes: 8ed8485c4f05 ("remoteproc: qcom: Add capability to collect minidumps")
Reviewed-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260318-rproc-memleak-v2-1-ade70ab858f2@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>