firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()

firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()

Clang static checker(scan-build) throws below warning：
  |  drivers/firmware/arm_scmi/driver.c:line 2915, column 2
  |        Attempt to free released memory.

When devm_add_action_or_reset() fails, scmi_debugfs_common_cleanup()
will run twice which causes double free of 'dbg->name'.

Remove the redundant scmi_debugfs_common_cleanup() to fix this problem.

Fixes: c3d4aed763ce ("firmware: arm_scmi: Populate a common SCMI debugfs root")
Signed-off-by: Su Hui <[email protected]>
Reviewed-by: Cristian Marussi <[email protected]>
Message-Id: <20241011104001.1546476[email protected]>
Signed-off-by: Sudeep Holla <[email protected]>