soc/fsl/qe: fix err handling of ucc_of_parse_tdm

Currently there are some issues with the ucc_of_parse_tdm function:
1, a possible null pointer dereference in ucc_of_parse_tdm,
detected by the semantic patch deref_null.cocci,
with the following warning:
drivers/soc/fsl/qe/qe_tdm.c:177:21-24: ERROR: pdev is NULL but dereferenced.
2, dev gets modified, so in any case that devm_iounmap() will fail
even when the new pdev is valid, because the iomap was done with a
 different pdev.
3, there is no driver bind with the "fsl,t1040-qe-si" or
"fsl,t1040-qe-siram" device. So allocating resources using devm_*()
with these devices won't provide a cleanup path for these resources
when the caller fails.

This patch fixes them.

Suggested-by: Li Yang <[email protected]>
Suggested-by: Christophe LEROY <[email protected]>
Signed-off-by: Wen Yang <[email protected]>
Reviewed-by: Peng Hao <[email protected]>
CC: Julia Lawall <[email protected]>
CC: Zhao Qiang <[email protected]>
CC: David S. Miller <[email protected]>
CC: [email protected]
CC: [email protected]
CC: [email protected]
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions