wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register()

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register() mhi_alloc_controller() allocates a memory space for mhi_ctrl. When gets some error, mhi_ctrl should be freed with mhi_free_controller(). But when ath11k_mhi_read_addr_from_dt() fails, the function returns without calling mhi_free_controller(), which will lead to a memory leak. We can fix it by calling mhi_free_controller() when ath11k_mhi_read_addr_from_dt() fails.

References

• https://git.kernel.org/stable/c/72ef896e80b6ec7cdc1dd42577045f8e7c9c32b3
• https://git.kernel.org/stable/c/015ced9eb63b8b19cb725a1d592d150b60494ced
• https://git.kernel.org/stable/c/43e7c3505ec70db3d3c6458824d5fa40f62e3e7b