clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe() Replace of_iomap() and kzalloc() with devm_of_iomap() and devm_kzalloc() which can automatically release the related memory when the device or driver is removed or unloaded to avoid potential memory leak. In this case, iounmap(anatop_base) in line 427,433 are removed as manual release is not required. Besides, referring to clk-imx8mq.c, check the return code of of_clk_add_hw_provider, if it returns negtive, print error info and unregister hws, which makes the program more robust.

References

• https://git.kernel.org/stable/c/cb047c13bbf9018693ae31f03a5a26b212d02f13
• https://git.kernel.org/stable/c/bcea444ab4c045864b55d67313833d606676602a
• https://git.kernel.org/stable/c/6317d0302655f7e854cd4f31e93b47d35cb058bb
• https://git.kernel.org/stable/c/5bcf140e9e6cf76f1f1bd1f489a14ca4d49f9a1a
• https://git.kernel.org/stable/c/92ce7629a11ae62292e1cfaa6132dab081fc80ee
• https://git.kernel.org/stable/c/878b02d5f3b56cb090dbe2c70c89273be144087f