uboot-imx

MA-14379 [coverity] Resource leak (RESOURCE_LEAK)

Fix coverity issue: CID 2970630: Resource leak (RESOURCE_LEAK)
leaked_storage: Variable cdns going out of scope leaks the storage
it points to.

Memory allocated by devm_kzalloc() won't be freed automatically in
u-boot, free the memory manually here.

Test: Coverity scan pass.

Change-Id: I3000a2385941cef3b8b7e01611cfdc999971a4ca
Signed-off-by: Luo Ji <ji.luo@nxp.com>
(cherry picked from commit ff1364165cbc0a19d554158995bdd9c3ccd0cc20)